ASTROSAT CZTI

Data Quality Report

Orbit 54776

Creation date: 2025-11-14T19:53:17.242008
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_103T01_9000006524_54776cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54776cztM0_level2_quad_clean.evt
Size (bytes)1,948,916,160291,732,480
Size1.8 GB 278.2 MB
Events in quadrant A10,699,9302,265,481
Events in quadrant B30,148,5691,296,235
Events in quadrant C16,178,7402,012,384
Events in quadrant D13,663,9691,963,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044660
B044553
C044650
D044343

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0527436020
B013169729910
C0689457006
D0630048651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251
B0253
C0251
D0254

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191969805.105230%
B17851886649.666685%
C19119218411.423192%
D1893614197.493663%

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 30079 20006 727 727 2.42% 3.63%
B 30079 18339 7414 7414 24.65% 40.43%
C 30079 19952 1837 1837 6.11% 9.21%
D 30079 19785 1210 1210 4.02% 6.12%

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 13 248 238464 287.84 2608 2540 819.6
A 0 8 128244 153.37 2608 2540 819.6
A 4 3 41337 47.33 2608 2540 819.6
B 2 249 22384839 53235.42 1715 1679 420.5
B 5 185 609381 1445.34 1715 1679 420.5
B 1 207 168990 397.93 1715 1679 420.5
C 9 38 3942118 5995.37 2157 2138 657.2
C 1 3 1082676 1644.23 2157 2138 657.2
C 14 254 937055 1422.64 2157 2138 657.2
D 14 52 834506 1014.52 2445 2314 820.3
D 3 12 599902 728.51 2445 2314 820.3
D 11 129 591094 717.78 2445 2314 820.3

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