ASTROSAT CZTI

Data Quality Report

Orbit 58631

Creation date: 2026-07-30T04:13:27.786398
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_004T06_9000006594_58631cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58631cztM0_level2_quad_clean.evt
Size (bytes)573,514,56089,942,400
Size546.9 MB 85.8 MB
Events in quadrant A4,114,079609,883
Events in quadrant B3,285,766671,730
Events in quadrant C8,826,910430,206
Events in quadrant D4,496,567556,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017508502
B014756327
C0319841141
D018351387

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01351
B01362
C01362
D01362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65223355.136461%
B65361141.744186%
C6484206531.847625%
D65263735.715599%

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 7586 6570 161 161 2.12% 2.45%
B 7586 6589 22 22 0.29% 0.33%
C 7586 6522 1792 1792 23.62% 27.48%
D 7586 6569 301 301 3.97% 4.58%

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 4 249 1039836 5976.94 702 685 173.9
A 12 114 159904 915.79 702 685 173.9
A 10 251 66692 379.66 702 685 173.9
B 8 128 129994 851.23 706 678 151.9
B 8 234 81970 535.11 706 678 151.9
B 4 171 63096 410.87 706 678 151.9
C 15 217 3996428 25113.97 577 572 159.1
C 13 3 1328618 8346.77 577 572 159.1
C 12 254 583181 3661.7 577 572 159.1
D 8 240 979327 5109.7 680 651 191.5
D 2 249 373241 1945.3 680 651 191.5
D 12 128 177088 921.18 680 651 191.5

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