ASTROSAT CZTI

Data Quality Report

Orbit 41869

Creation date: 2024-06-27T22:33:51.073340
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_001T11_9000005710_41869cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41869cztM0_level2_quad_clean.evt
Size (bytes)128,877,12023,601,600
Size122.9 MB 22.5 MB
Events in quadrant A1,503,433147,070
Events in quadrant B782,349165,922
Events in quadrant C805,878156,064
Events in quadrant D1,559,957134,829

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054370
B033430
C032830
D056610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149522515.050167%
B1495110.735786%
C149540.267559%
D149518712.508361%

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 1495 1495 158 158 10.57% 10.57%
B 1495 1495 4 4 0.27% 0.27%
C 1495 1495 0 0 0.00% 0.00%
D 1495 1495 195 195 13.04% 13.04%

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 14 24 738285 22116.44 153 150 33.4
A 10 83 145776 4363.32 153 150 33.4
A 2 79 19497 579.67 153 150 33.4
B 0 190 55930 1726.4 158 153 32.3
B 5 255 49091 1514.72 158 153 32.3
B 0 186 16550 507.52 158 153 32.3
C 0 10 129243 3439.88 155 155 37.5
C 15 214 62102 1650.74 155 155 37.5
C 15 111 4683 120.66 155 155 37.5
D 12 79 658550 16869.08 153 148 39.0
D 2 249 104657 2677.65 153 148 39.0
D 13 249 84187 2153.18 153 148 39.0

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