ASTROSAT CZTI

Data Quality Report

Orbit 53267

Creation date: 2025-08-03T05:20:33.535823
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/AS1C09_011T08_9000006492_53267cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53267cztM0_level2_quad_clean.evt
Size (bytes)578,154,24090,806,400
Size551.4 MB 86.6 MB
Events in quadrant A5,005,506587,124
Events in quadrant B3,546,879670,777
Events in quadrant C6,387,213556,293
Events in quadrant D5,978,447499,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192602
B0148102
C0233182
D0220572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62345038.068656%
B62341652.646776%
C623474811.998717%
D623495915.383381%

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 7514 6235 412 412 5.48% 6.61%
B 7514 6235 105 105 1.40% 1.68%
C 7514 6235 716 716 9.53% 11.48%
D 7514 6234 896 896 11.92% 14.37%

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 1021903 6389.24 643 628 159.8
A 3 27 927000 5795.51 643 628 159.8
A 15 174 78273 485.76 643 628 159.8
B 4 81 231922 1657.7 660 638 139.5
B 2 249 218243 1559.66 660 638 139.5
B 4 171 145038 1034.97 660 638 139.5
C 15 224 968093 5514.08 629 622 175.5
C 0 240 948186 5400.62 629 622 175.5
C 10 22 783470 4461.82 629 622 175.5
D 13 170 1527075 8842.08 603 576 172.6
D 12 3 1297021 7509.51 603 576 172.6
D 12 128 278193 1608.07 603 576 172.6

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