ASTROSAT CZTI

Data Quality Report

Orbit 20190104_T03_050T01_9000002620_level2

Creation date: 2019-01-05T09:58:05.462775
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/AS1T03_050T01_9000002620cztM0_level2_bc.evt modeM0/AS1T03_050T01_9000002620cztM0_level2_quad_clean.evt
Size (bytes)226,275,84091,938,240
Size215.8 MB 87.7 MB
Events in quadrant A1,362,915600,704
Events in quadrant B1,983,442600,858
Events in quadrant C1,591,060586,752
Events in quadrant D1,493,740571,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127760
B0150170
C0140530
D0129340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6077360.592398%
B60772634.327793%
C6077641.053151%
D6077290.477209%

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 7242 6078 0 0 0.00% 0.00%
B 7242 6077 82 82 1.13% 1.35%
C 7242 6077 0 0 0.00% 0.00%
D 7242 6077 4 4 0.06% 0.07%

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 14 237 102458 1389.2 328 320 73.5
A 0 226 2175 25.23 328 320 73.5
A 12 194 2101 24.22 328 320 73.5
B 10 245 635577 9820.31 330 323 64.7
B 0 229 22164 337.64 330 323 64.7
B 0 189 13362 201.57 330 323 64.7
C 3 233 347522 4512.37 320 318 76.9
C 5 218 9573 120.28 320 318 76.9
C 13 61 1913 20.73 320 318 76.9
D 1 52 146380 1892.99 324 311 77.2
D 7 38 28228 361.79 324 311 77.2
D 2 234 24423 312.48 324 311 77.2

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