ASTROSAT CZTI

Data Quality Report

Orbit 20191016_A07_010T05_9000003236_level2

Creation date: 2019-10-17T11:20:33.103805
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/AS1A07_010T05_9000003236cztM0_level2_bc.evt modeM0/AS1A07_010T05_9000003236cztM0_level2_quad_clean.evt
Size (bytes)659,563,200282,476,160
Size629.0 MB 269.4 MB
Events in quadrant A4,347,8971,846,597
Events in quadrant B4,704,2011,864,107
Events in quadrant C4,801,8991,756,157
Events in quadrant D4,790,8801,751,586

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413100
B0424140
C0453320
D0422560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194182351.210217%
B194183051.570708%
C194189004.634875%
D194182241.153569%

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 23633 19416 1 1 0.00% 0.01%
B 23633 19413 6 6 0.03% 0.03%
C 23633 19413 25 25 0.11% 0.13%
D 23633 19414 4 4 0.02% 0.02%

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 5 16 82995 346.24 1104 1087 236.6
A 13 254 33692 137.83 1104 1087 236.6
A 0 226 7164 25.69 1104 1087 236.6
B 3 64 152424 733.12 1113 1091 206.4
B 0 197 69048 329.21 1113 1091 206.4
B 0 230 65524 312.14 1113 1091 206.4
C 10 22 829590 3401.08 1031 1028 243.6
C 4 175 12836 48.47 1031 1028 243.6
C 13 61 6258 21.47 1031 1028 243.6
D 7 238 209483 803.63 1075 1044 259.4
D 1 52 141101 539.99 1075 1044 259.4
D 2 234 89534 341.17 1075 1044 259.4

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