ASTROSAT CZTI

Data Quality Report

Orbit 56023

Creation date: 2026-02-04T18:43:52.552127
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_066T02_9000006546_56023cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56023cztM0_level2_quad_clean.evt
Size (bytes)506,162,88085,250,880
Size482.7 MB 81.3 MB
Events in quadrant A5,145,428538,246
Events in quadrant B3,120,371621,727
Events in quadrant C2,872,786555,001
Events in quadrant D7,116,440433,531

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196461
B0137141
C0132931
D0254313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619762410.069388%
B6197921.484589%
C6198440.709906%
D6197130621.074714%

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 7127 6198 452 452 6.34% 7.29%
B 7127 6198 39 39 0.55% 0.63%
C 7128 6199 18 18 0.25% 0.29%
D 7127 6198 1166 1166 16.36% 18.81%

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 12 115 2121712 13305.69 641 626 159.4
A 0 8 377161 2362.02 641 626 159.4
A 4 3 31161 191.54 641 626 159.4
B 5 185 272003 1888.8 653 628 143.7
B 10 247 95041 657.12 653 628 143.7
B 4 171 41633 285.4 653 628 143.7
C 12 252 122515 687.86 640 633 177.2
C 13 3 97957 549.26 640 633 177.2
C 6 223 39566 219.73 640 633 177.2
D 11 129 2949941 17529.46 589 563 168.3
D 8 160 1079348 6411.69 589 563 168.3
D 6 239 425122 2523.34 589 563 168.3

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