ASTROSAT CZTI

Data Quality Report

Orbit 52630

Creation date: 2025-06-23T18:57:43.292129
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/AS1C09_011T06_9000006478_52630cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52630cztM0_level2_quad_clean.evt
Size (bytes)609,500,16055,180,800
Size581.3 MB 52.6 MB
Events in quadrant A2,217,647437,665
Events in quadrant B3,657,218446,081
Events in quadrant C9,577,592194,274
Events in quadrant D6,736,084255,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010479110
B014460111
C032171429
D023520112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01004
B01004
C01004
D01015

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4806170.353725%
B48073256.760974%
C4801279758.258696%
D4802190639.691795%

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 7943 4809 14 14 0.18% 0.29%
B 7943 4810 241 241 3.03% 5.01%
C 7943 4801 2628 2628 33.09% 54.74%
D 7944 4807 1558 1558 19.61% 32.41%

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 8 246 74507 644.4 459 450 114.9
A 12 17 42504 365.93 459 450 114.9
A 15 174 34312 294.65 459 450 114.9
B 10 254 642482 6710.69 448 431 95.7
B 5 185 446625 4663.6 448 431 95.7
B 10 128 369156 3853.9 448 431 95.7
C 15 248 6208987 76090.81 286 283 81.6
C 15 147 1094750 13413.25 286 283 81.6
C 13 3 953274 11679.39 286 283 81.6
D 12 16 4133392 42674.39 329 314 96.9
D 1 7 468653 4835.64 329 314 96.9
D 2 153 152397 1570.27 329 314 96.9

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