ASTROSAT CZTI

Data Quality Report

Orbit 50142

Creation date: 2025-01-04T20:03:58.570492
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_003T01_9000006442_50142cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50142cztM0_level2_quad_clean.evt
Size (bytes)962,421,12068,279,040
Size917.8 MB 65.1 MB
Events in quadrant A6,043,387562,695
Events in quadrant B3,989,053646,917
Events in quadrant C14,707,92650,030
Events in quadrant D10,391,208362,021

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224981
B0162221
C0480531
D0352571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639066810.453834%
B63902654.147105%
C6390592692.738654%
D6390246638.591549%

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 7350 6390 504 504 6.86% 7.89%
B 7350 6390 169 169 2.30% 2.64%
C 7349 6389 4978 4978 67.74% 77.92%
D 7350 6390 2316 2316 31.51% 36.24%

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 6 250 791668 4842.58 648 630 163.4
A 0 98 726416 4443.12 648 630 163.4
A 10 253 526309 3218.11 648 630 163.4
B 10 16 534432 3775.6 658 638 141.4
B 2 176 114797 807.46 658 638 141.4
B 0 229 100629 707.25 658 638 141.4
C 4 111 6911945 122068.05 194 192 56.6
C 15 214 3255182 57486.18 194 192 56.6
C 15 230 1693582 29906.86 194 192 56.6
D 15 168 2925268 18639.1 541 522 156.9
D 15 106 941862 5999.06 541 522 156.9
D 12 6 466966 2972.6 541 522 156.9

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