ASTROSAT CZTI

Data Quality Report

Orbit 57905

Creation date: 2026-06-11T08:07:54.033751
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_125T11_9000006582_57905cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57905cztM0_level2_quad_clean.evt
Size (bytes)395,841,600100,802,880
Size377.5 MB 96.1 MB
Events in quadrant A2,921,728667,291
Events in quadrant B3,308,228707,150
Events in quadrant C4,620,250600,984
Events in quadrant D3,258,538589,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142142
B0149902
C0187872
D0150362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6987200.286246%
B6987761.087734%
C69873945.639044%
D6987390.558179%

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 7652 6988 2 2 0.03% 0.03%
B 7652 6988 14 14 0.18% 0.20%
C 7652 6988 341 341 4.46% 4.88%
D 7652 6988 24 24 0.31% 0.34%

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 7 64 47351 259.0 735 716 180.1
A 3 245 14989 79.27 735 716 180.1
A 3 137 9146 46.82 735 716 180.1
B 10 128 83032 535.95 726 696 153.6
B 0 63 38938 248.93 726 696 153.6
B 5 185 38707 247.42 726 696 153.6
C 15 224 1431763 7618.28 694 686 187.8
C 12 252 357585 1899.94 694 686 187.8
C 1 16 39310 205.61 694 686 187.8
D 8 160 122274 612.08 707 674 198.7
D 2 31 72844 363.27 707 674 198.7
D 12 248 52568 261.21 707 674 198.7

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