ASTROSAT CZTI

Data Quality Report

Orbit 54808

Creation date: 2025-11-14T23:15:35.485276
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_039T06_9000006526_54808cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54808cztM0_level2_quad_clean.evt
Size (bytes)401,823,36099,872,640
Size383.2 MB 95.2 MB
Events in quadrant A2,988,829658,772
Events in quadrant B3,832,877693,016
Events in quadrant C3,492,593616,522
Events in quadrant D4,032,459583,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140832
B0163722
C0154632
D0168635

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6773741.092573%
B67732273.351543%
C67731582.332792%
D67721802.658004%

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 7873 6773 14 14 0.18% 0.21%
B 7873 6773 126 126 1.60% 1.86%
C 7873 6773 73 73 0.93% 1.08%
D 7872 6772 161 161 2.05% 2.38%

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 6 33232 177.23 740 721 183.4
A 5 240 27787 147.55 740 721 183.4
A 3 14 18034 94.38 740 721 183.4
B 5 185 808376 5161.61 722 697 156.5
B 10 247 66330 419.44 722 697 156.5
B 6 255 62910 397.58 722 697 156.5
C 12 252 232082 1191.9 711 707 194.1
C 4 5 162760 834.79 711 707 194.1
C 14 254 152424 781.55 711 707 194.1
D 15 94 396105 1947.65 714 685 203.0
D 8 160 263912 1296.53 714 685 203.0
D 2 249 141937 695.74 714 685 203.0

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