ASTROSAT CZTI

Data Quality Report

Orbit 23757

Creation date: 2024-06-27T18:58:22.379683
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/AS1C05_007T01_9000003518_23757cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23757cztM0_level2_quad_clean.evt
Size (bytes)631,022,400124,076,160
Size601.8 MB 118.3 MB
Events in quadrant A4,077,451797,589
Events in quadrant B4,281,405816,104
Events in quadrant C4,240,941789,390
Events in quadrant D5,934,131763,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177182
B0181552
C0179122
D0233162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85061742.045615%
B85062212.598166%
C85062623.080179%
D85063383.973666%

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 9181 8509 0 0 0.00% 0.00%
B 9181 8508 4 4 0.04% 0.05%
C 9181 8508 1 1 0.01% 0.01%
D 9181 8508 146 146 1.59% 1.72%

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 13 254 15410 66.74 1057 1031 215.4
A 3 137 9504 39.33 1057 1031 215.4
A 0 226 9033 37.14 1057 1031 215.4
B 3 64 46579 223.1 1056 1029 204.2
B 0 229 33113 157.14 1056 1029 204.2
B 0 189 28159 132.88 1056 1029 204.2
C 14 238 158698 646.24 1029 1036 244.0
C 10 91 36675 146.08 1029 1036 244.0
C 7 247 32897 130.6 1029 1036 244.0
D 1 52 1130275 4469.71 1031 1000 252.7
D 8 195 661283 2613.43 1031 1000 252.7
D 12 233 239845 945.36 1031 1000 252.7

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