ASTROSAT CZTI

Data Quality Report

Orbit 51612

Creation date: 2025-04-15T10:36:52.835442
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/AS1A13_037T05_9000006460_51612cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51612cztM0_level2_quad_clean.evt
Size (bytes)715,446,72086,042,880
Size682.3 MB 82.1 MB
Events in quadrant A4,326,364632,466
Events in quadrant B4,167,813686,849
Events in quadrant C4,345,133571,857
Events in quadrant D13,132,117253,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172601
B0167441
C0175661
D0435371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65953184.821835%
B65953114.715694%
C659570110.629265%
D6595408561.940864%

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 7640 6595 175 175 2.29% 2.65%
B 7640 6595 116 116 1.52% 1.76%
C 7640 6595 166 166 2.17% 2.52%
D 7640 6595 4037 4037 52.84% 61.21%

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 12 3 283425 1577.93 738 720 179.2
A 12 250 249704 1389.72 738 720 179.2
A 5 241 240176 1336.54 738 720 179.2
B 4 174 214954 1374.63 728 704 155.9
B 5 185 178786 1142.58 728 704 155.9
B 8 128 139108 888.0 728 704 155.9
C 15 198 1003688 5235.43 692 685 191.6
C 13 3 209869 1091.89 692 685 191.6
C 0 209 103576 537.06 692 685 191.6
D 15 174 6125927 40835.14 544 523 150.0
D 8 176 2160234 14397.76 544 523 150.0
D 11 176 1594026 10623.12 544 523 150.0

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