ASTROSAT CZTI

Data Quality Report

Orbit 20240804_A09_038T22_9000006368_level2

Creation date: 2024-08-06T09:58:22.561307
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/AS1A09_038T22_9000006368cztM0_level2.fits modeM0/AS1A09_038T22_9000006368cztM0_level2_quad_clean.evt
Size (bytes)126,812,160198,227,520
Size120.9 MB 189.0 MB
Events in quadrant A720,4381,251,551
Events in quadrant B719,7761,300,625
Events in quadrant C750,0801,286,829
Events in quadrant D641,0501,156,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0518050
B0304210
C0299400
D0351300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146146214.249350%
B146153902.668491%
C146151751.197400%
D146152821.929524%

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 15339 14614 0 0 0.00% 0.00%
B 15340 14615 0 0 0.00% 0.00%
C 15340 14615 0 0 0.00% 0.00%
D 15340 14615 0 0 0.00% 0.00%

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 7 110 603 8.48 187 176 50.3
A 15 236 580 8.03 187 176 50.3
A 7 30 535 7.13 187 176 50.3
B 2 9 690 12.85 190 181 39.6
B 2 8 532 8.86 190 181 39.6
B 3 17 527 8.74 190 181 39.6
C 3 202 569 7.31 198 184 52.7
C 1 81 553 7.0 198 184 52.7
C 1 80 549 6.93 198 184 52.7
D 10 189 487 6.16 183 166 52.1
D 1 31 479 6.0 183 166 52.1
D 15 47 476 5.94 183 166 52.1

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