ASTROSAT CZTI

Data Quality Report

Orbit 53860

Creation date: 2025-09-12T04:09:25.200404
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_057T04_9000006508_53860cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53860cztM0_level2_quad_clean.evt
Size (bytes)549,633,60089,153,280
Size524.2 MB 85.0 MB
Events in quadrant A3,755,806615,135
Events in quadrant B3,761,881649,527
Events in quadrant C8,349,681442,494
Events in quadrant D3,985,461549,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153491
B0155871
C0292205
D0162221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63481131.780088%
B63491412.220822%
C6348178228.071834%
D63481492.347196%

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 7433 6349 94 94 1.26% 1.48%
B 7434 6350 107 107 1.44% 1.69%
C 7433 6349 1805 1805 24.28% 28.43%
D 7433 6349 147 147 1.98% 2.32%

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 8 249 479804 2862.55 676 659 167.4
A 0 8 315669 1881.96 676 659 167.4
A 15 174 163738 974.28 676 659 167.4
B 5 185 352720 2485.04 672 652 141.7
B 0 213 291247 2051.14 672 652 141.7
B 0 171 123791 869.17 672 652 141.7
C 1 241 3285586 20210.46 584 578 162.5
C 15 224 2328975 14325.07 584 578 162.5
C 13 3 191150 1172.46 584 578 162.5
D 3 224 394808 2124.35 653 624 185.6
D 3 12 224265 1205.26 653 624 185.6
D 2 249 185226 994.87 653 624 185.6

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