ASTROSAT CZTI

Data Quality Report

Orbit 43949

Creation date: 2024-06-27T22:57:32.872653
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_025T01_9000005920_43949cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43949cztM0_level2_quad_clean.evt
Size (bytes)499,570,560106,859,520
Size476.4 MB 101.9 MB
Events in quadrant A6,116,204705,192
Events in quadrant B3,552,577731,522
Events in quadrant C3,367,540710,802
Events in quadrant D4,942,469626,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229202
B0151222
C0146652
D0193002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66232403.623735%
B6623961.449494%
C6623420.634154%
D66234106.190548%

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 7643 6624 133 133 1.74% 2.01%
B 7643 6624 40 40 0.52% 0.60%
C 7643 6624 30 30 0.39% 0.45%
D 7643 6624 379 379 4.96% 5.72%

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 15 222 1579586 10572.26 724 709 149.3
A 10 83 1284615 8597.12 724 709 149.3
A 15 223 396402 2649.59 724 709 149.3
B 0 200 213395 1493.46 729 707 142.4
B 5 172 114769 800.93 729 707 142.4
B 0 213 87584 610.04 729 707 142.4
C 1 241 348689 2051.74 722 728 169.6
C 3 233 158369 929.53 722 728 169.6
C 14 254 23015 131.41 722 728 169.6
D 7 204 702168 3972.52 703 681 176.6
D 5 235 444424 2512.92 703 681 176.6
D 1 52 318734 1801.14 703 681 176.6

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