ASTROSAT CZTI

Data Quality Report

Orbit 55007

Creation date: 2025-11-28T08:04:04.197825
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_014T01_9000006528_55007cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_55007cztM0_level2_quad_clean.evt
Size (bytes)984,568,320101,638,080
Size939.0 MB 96.9 MB
Events in quadrant A6,034,829717,095
Events in quadrant B4,410,017847,241
Events in quadrant C6,737,659734,046
Events in quadrant D18,626,555207,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023924131
B018963114
C025922144
D061823844

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01702
B01702
C01702
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A823094311.458080%
B82381501.820830%
C82294405.346944%
D8194608674.273859%

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 10044 8246 799 799 7.95% 9.69%
B 10056 8258 51 51 0.51% 0.62%
C 10033 8242 456 456 4.55% 5.53%
D 10009 8197 6175 6175 61.69% 75.33%

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 15 32 2450854 11596.14 843 820 211.3
A 3 14 175415 826.37 843 820 211.3
A 0 8 66251 309.69 843 820 211.3
B 5 236 288252 1503.28 886 853 191.2
B 5 185 268096 1397.85 886 853 191.2
B 2 249 139810 726.83 886 853 191.2
C 9 38 2495479 10576.64 860 854 235.9
C 13 3 503926 2132.91 860 854 235.9
C 12 252 109568 460.92 860 854 235.9
D 15 94 14242392 91290.43 545 520 156.0
D 2 249 1335144 8554.94 545 520 156.0
D 11 129 464667 2975.18 545 520 156.0

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