ASTROSAT CZTI

Data Quality Report

Orbit 56438

Creation date: 2026-03-04T16:20:58.460668
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_083T05_9000006554_56438cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56438cztM0_level2_quad_clean.evt
Size (bytes)854,841,60088,418,880
Size815.2 MB 84.3 MB
Events in quadrant A10,600,443486,473
Events in quadrant B7,251,929670,345
Events in quadrant C7,981,666359,110
Events in quadrant D5,212,000626,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366510
B0268550
C0290950
D0209140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7688262934.196150%
B7688139218.106139%
C7689379749.382234%
D76894015.215243%

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 7688 7688 2478 2478 32.23% 32.23%
B 7688 7688 952 952 12.38% 12.38%
C 7688 7688 603 603 7.84% 7.84%
D 7689 7689 389 389 5.06% 5.06%

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 3 5639606 34070.52 668 650 165.5
A 4 95 1091072 6588.32 668 650 165.5
A 12 194 709625 4283.62 668 650 165.5
B 4 206 2760367 16488.52 783 753 167.4
B 5 185 853584 5095.61 783 753 167.4
B 4 21 112322 666.62 783 753 167.4
C 12 254 5685004 47870.23 432 428 118.7
C 15 209 277357 2332.04 432 428 118.7
C 1 16 170314 1430.62 432 428 118.7
D 2 249 1296012 5796.06 797 761 223.5
D 2 31 282036 1258.66 797 761 223.5
D 11 176 157695 702.26 797 761 223.5

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