ASTROSAT CZTI

Data Quality Report

Orbit 20210428_A10_050T05_9000004342_level2

Creation date: 2025-12-25T01:55:59.043283
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_050T05_9000004342cztM0_level2.fits modeM0/AS1A10_050T05_9000004342cztM0_level2_quad_clean.evt
Size (bytes)286,364,160290,419,200
Size273.1 MB 277.0 MB
Events in quadrant A1,810,0101,892,209
Events in quadrant B1,707,2561,847,016
Events in quadrant C1,529,4101,341,293
Events in quadrant D1,542,6461,636,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0629970
B0917560
C01581050
D0811150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06200
B06200
C06200
D06200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302214761.575064%
B302216932.293107%
C302211025433.930049%
D302219803.242778%

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 34676 30215 0 0 0.00% 0.00%
B 34676 30215 0 0 0.00% 0.00%
C 34676 30213 0 0 0.00% 0.00%
D 34676 30215 0 0 0.00% 0.00%

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 0 29 1785 11.51 471 442 116.6
A 7 110 1428 8.45 471 442 116.6
A 0 30 1359 7.86 471 442 116.6
B 2 9 1363 10.16 450 428 92.1
B 3 80 1178 8.15 450 428 92.1
B 3 17 1159 7.94 450 428 92.1
C 1 81 1271 8.65 403 376 103.5
C 1 80 1217 8.13 403 376 103.5
C 12 241 1072 6.73 403 376 103.5
D 3 14 1165 6.44 441 402 118.5
D 15 46 1160 6.39 441 402 118.5
D 10 189 1101 5.9 441 402 118.5

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