ASTROSAT CZTI

Data Quality Report

Orbit 09326

Creation date: 2024-06-27T15:44:33.176846
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/AS1G07_009T01_9000001318_09326cztM0_level2.evt modeM0/AS1G07_009T01_9000001318_09326cztM0_level2_quad_clean.evt
Size (bytes)626,857,920120,461,760
Size597.8 MB 114.9 MB
Events in quadrant A5,200,664736,455
Events in quadrant B4,481,860776,585
Events in quadrant C4,236,323753,352
Events in quadrant D4,420,095724,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214980
B0196670
C0193100
D0197160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B02140
C02060
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92871441.550555%
B95001371.442105%
C9466710.750053%
D9343951.016804%

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 13994 11462 1 1 0.01% 0.01%
B 13993 11556 4 4 0.03% 0.03%
C 13992 11557 1 1 0.01% 0.01%
D 13989 11475 12 12 0.09% 0.10%

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 8 5 972523 4386.85 1084 1058 221.4
A 1 162 34664 151.75 1084 1058 221.4
A 0 226 9849 39.7 1084 1058 221.4
B 10 245 83704 379.37 1121 1093 217.8
B 12 111 24984 109.71 1121 1093 217.8
B 8 234 21569 94.03 1121 1093 217.8
C 10 22 9990 35.5 1080 1086 250.8
C 13 61 8060 27.8 1080 1086 250.8
C 14 67 6245 20.57 1080 1086 250.8
D 1 52 123332 451.13 1057 1029 271.1
D 12 227 113193 413.73 1057 1029 271.1
D 12 233 77274 281.24 1057 1029 271.1

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