ASTROSAT CZTI

Data Quality Report

Orbit 20190411_A05_046T01_9000002838_level2

Creation date: 2019-04-24T21:05:22.025721
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_046T01_9000002838cztM0_level2_bc.evt modeM0/AS1A05_046T01_9000002838cztM0_level2_quad_clean.evt
Size (bytes)17,115,998,4006,046,525,440
Size15.9 GB 5.6 GB
Events in quadrant A103,627,16438,300,021
Events in quadrant B107,558,37539,508,652
Events in quadrant C118,108,34938,130,040
Events in quadrant D158,552,96136,500,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09666680
B09857050
C010343660
D011651630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091320
B091320
C091320
D091320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07320
B07320
C07320
D07320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44853360421.347058%
B44853485451.905095%
C44853495922.138522%
D448533221774.944341%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 551201 448528 225 225 0.04% 0.05%
B 551201 448525 164 164 0.03% 0.04%
C 551201 448537 72 72 0.01% 0.02%
D 551201 448537 4849 4849 0.88% 1.08%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 192 9561862 1864.15 23715 23262 5116.9
A 15 174 822554 156.21 23715 23262 5116.9
A 13 170 510645 95.25 23715 23262 5116.9
B 7 220 3101163 684.07 24190 23596 4498.9
B 3 64 2972778 655.53 24190 23596 4498.9
B 10 245 1874981 411.52 24190 23596 4498.9
C 3 233 27542961 5015.6 23324 23184 5486.8
C 0 207 788981 139.57 23324 23184 5486.8
C 13 61 135808 20.53 23324 23184 5486.8
D 10 66 21707294 4047.1 23280 22460 5358.1
D 1 52 21378653 3985.77 23280 22460 5358.1
D 11 176 9568507 1781.61 23280 22460 5358.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter