ASTROSAT CZTI

Data Quality Report

Orbit 56919

Creation date: 2026-04-06T00:41:22.810489
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_083T14_9000006564_56919cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56919cztM0_level2_quad_clean.evt
Size (bytes)1,140,776,64055,523,520
Size1.1 GB 53.0 MB
Events in quadrant A4,997,770569,218
Events in quadrant B5,646,549621,971
Events in quadrant C16,154,80126,901
Events in quadrant D14,918,811978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01435
B01424
C01420
D01426

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209511181
B0228071561
C0569544470
D0525743838

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67166209.231686%
B66674757.124644%
C6488620795.668927%
D6526651999.892737%

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 7146 6842 553 553 7.74% 8.08%
B 7143 6839 398 398 5.57% 5.82%
C 7138 6631 5845 5845 81.89% 88.15%
D 7142 6528 5851 5851 81.92% 89.63%

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 1920551 11581.59 663 646 165.8
A 10 251 192815 1159.24 663 646 165.8
A 13 248 176490 1060.76 663 646 165.8
B 5 185 1823084 12796.92 663 639 142.4
B 5 172 375280 2630.67 663 639 142.4
B 0 171 287284 2012.78 663 639 142.4
C 9 38 13784724 143938.48 348 345 95.8
C 13 3 697988 7284.89 348 345 95.8
C 14 254 150059 1563.34 348 345 95.8
D 12 33 13701800 219045.74 215 204 62.6
D 2 249 155098 2476.27 215 204 62.6
D 8 240 79547 1268.45 215 204 62.6

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