ASTROSAT CZTI

Data Quality Report

Orbit 50757

Creation date: 2025-02-15T04:48:05.157912
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/AS1C07_001T01_9000006450_50757cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50757cztM0_level2_quad_clean.evt
Size (bytes)541,278,72086,425,920
Size516.2 MB 82.4 MB
Events in quadrant A3,815,987572,564
Events in quadrant B3,739,131615,035
Events in quadrant C5,292,114535,216
Events in quadrant D6,714,914466,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01304
B01308
C01302
D01306

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016358790
B016493968
C020646731
D0257131462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139861.400880%
B61262053.346392%
C61253195.208163%
D609177012.641602%

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 7078 6211 36 36 0.51% 0.58%
B 7051 6182 98 98 1.39% 1.59%
C 7077 6207 224 224 3.17% 3.61%
D 7011 6162 708 708 10.10% 11.49%

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 4 375783 2348.67 635 619 159.7
A 4 3 197606 1233.21 635 619 159.7
A 14 254 179372 1119.06 635 619 159.7
B 4 206 435821 3227.19 631 610 134.9
B 7 0 147403 1088.51 631 610 134.9
B 10 247 102101 752.58 631 610 134.9
C 5 10 1252459 7388.92 613 610 169.4
C 13 3 289389 1704.49 613 610 169.4
C 9 38 238001 1401.18 613 610 169.4
D 15 93 1263828 7646.91 583 559 165.2
D 8 176 698762 4226.41 583 559 165.2
D 8 48 686720 4153.52 583 559 165.2

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