ASTROSAT CZTI

Data Quality Report

Orbit 56784

Creation date: 2026-03-27T22:15:09.851474
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_083T03_9000006562_56784cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56784cztM0_level2_quad_clean.evt
Size (bytes)422,930,88084,997,440
Size403.3 MB 81.1 MB
Events in quadrant A5,387,359516,984
Events in quadrant B3,535,611592,357
Events in quadrant C3,041,114540,011
Events in quadrant D3,231,131511,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200811
B0148251
C0135201
D0140931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591571812.138631%
B59153425.781910%
C5916771.301555%
D59161161.960784%

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 7000 5916 587 587 8.39% 9.92%
B 7000 5916 179 179 2.56% 3.03%
C 7001 5917 62 62 0.89% 1.05%
D 7001 5917 116 116 1.66% 1.96%

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 3 62 1950793 12991.6 602 588 150.1
A 3 14 891375 5934.12 602 588 150.1
A 10 251 183652 1219.51 602 588 150.1
B 4 206 368628 2780.67 614 592 132.4
B 8 128 227376 1713.45 614 592 132.4
B 10 247 154435 1162.35 614 592 132.4
C 15 230 210555 1246.89 604 598 168.4
C 13 3 130673 772.49 604 598 168.4
C 14 96 95194 561.79 604 598 168.4
D 2 249 664626 3886.31 603 574 170.9
D 2 31 72486 420.86 603 574 170.9
D 5 173 44504 257.09 603 574 170.9

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