ASTROSAT CZTI

Data Quality Report

Orbit 57568

Creation date: 2026-05-19T16:15:38.491667
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/AS1A14_070T08_9000006576_57568cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57568cztM0_level2_quad_clean.evt
Size (bytes)361,235,52091,304,640
Size344.5 MB 87.1 MB
Events in quadrant A2,788,364602,417
Events in quadrant B2,861,042647,528
Events in quadrant C3,538,682573,885
Events in quadrant D3,716,875522,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126511
B0126481
C0147751
D0151281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992681.134846%
B59921001.668892%
C59921843.070761%
D59923185.307076%

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 7122 5994 0 0 0.00% 0.00%
B 7122 5994 14 14 0.20% 0.23%
C 7122 5994 74 74 1.04% 1.23%
D 7122 5994 201 201 2.82% 3.35%

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 12 153739 931.54 664 649 164.3
A 10 251 21503 126.89 664 649 164.3
A 11 31 13843 80.28 664 649 164.3
B 0 171 57760 409.26 651 628 139.6
B 4 206 40116 282.87 651 628 139.6
B 15 69 29644 207.86 651 628 139.6
C 15 224 769937 4423.46 639 633 173.9
C 14 254 119713 684.7 639 633 173.9
C 14 245 68980 392.99 639 633 173.9
D 8 160 479713 2671.88 634 604 179.3
D 2 249 221088 1229.59 634 604 179.3
D 7 96 161298 896.15 634 604 179.3

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