ASTROSAT CZTI

Data Quality Report

Orbit 53624

Creation date: 2025-08-27T08:11:53.408764
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_004T05_9000006502_53624cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53624cztM0_level2_quad_clean.evt
Size (bytes)2,126,952,000201,528,000
Size2.0 GB 192.2 MB
Events in quadrant A18,057,3321,336,089
Events in quadrant B13,337,1831,580,457
Events in quadrant C29,139,857805,956
Events in quadrant D16,908,5051,221,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0652983
B0514213
C0980353
D0620493

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16771235714.054022%
B1677111036.576829%
C16771822149.019140%
D16772233513.922013%

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 17351 16773 2103 2103 12.12% 12.54%
B 17351 16773 633 633 3.65% 3.77%
C 17351 16773 8029 8029 46.27% 47.87%
D 17352 16773 2396 2396 13.81% 14.28%

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 3 78 4879962 11693.32 1690 1650 417.2
A 4 95 3398348 8141.89 1690 1650 417.2
A 15 174 757146 1810.92 1690 1650 417.2
B 15 20 1892868 5195.01 1723 1661 364.0
B 7 0 1162567 3188.93 1723 1661 364.0
B 4 206 933121 2558.65 1723 1661 364.0
C 1 241 10883380 30314.43 1294 1282 359.0
C 15 224 7839325 21834.56 1294 1282 359.0
C 4 5 1692955 4712.52 1294 1282 359.0
D 8 176 6912624 14729.03 1627 1557 469.2
D 10 172 414573 880.23 1627 1557 469.2
D 7 70 395479 839.54 1627 1557 469.2

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