ASTROSAT CZTI

Data Quality Report

Orbit 55039

Creation date: 2025-12-01T11:32:05.136101
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_025T01_9000006530_55039cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55039cztM0_level2_quad_clean.evt
Size (bytes)703,719,36087,059,520
Size671.1 MB 83.0 MB
Events in quadrant A4,083,453657,152
Events in quadrant B3,604,676722,812
Events in quadrant C3,239,761641,399
Events in quadrant D14,603,755150,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168403
B0152831
C0145491
D0479051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66581802.703515%
B66591101.651900%
C6659580.871002%
D6660518777.882883%

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 7794 6660 112 112 1.44% 1.68%
B 7794 6660 28 28 0.36% 0.42%
C 7794 6660 33 33 0.42% 0.50%
D 7794 6657 4278 4278 54.89% 64.26%

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 1010003 5578.69 731 712 180.9
A 0 8 148601 817.43 731 712 180.9
A 3 95 38725 210.11 731 712 180.9
B 5 236 263611 1677.07 731 703 156.8
B 4 81 211997 1347.83 731 703 156.8
B 5 185 166151 1055.38 731 703 156.8
C 13 3 134449 677.82 716 711 197.3
C 12 252 91937 462.36 716 711 197.3
C 7 220 65642 329.09 716 711 197.3
D 15 94 6573037 64331.26 354 337 102.2
D 11 129 5196002 50853.33 354 337 102.2
D 15 93 459479 4493.92 354 337 102.2

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