ASTROSAT CZTI

Data Quality Report

Orbit 17697

Creation date: 2024-06-27T17:39:36.685780
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/AS1A05_084T06_9000002626_17697cztM0_level2.evt modeM0/AS1A05_084T06_9000002626_17697cztM0_level2_quad_clean.evt
Size (bytes)622,059,84099,751,680
Size593.2 MB 95.1 MB
Events in quadrant A4,996,148611,020
Events in quadrant B4,618,502615,397
Events in quadrant C4,425,265590,043
Events in quadrant D4,189,092580,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209453
B0194012
C0186312
D0186872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89872412.681651%
B8987921.023701%
C8987931.034828%
D8987400.445087%

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 10812 8989 122 122 1.13% 1.36%
B 10812 8989 6 6 0.06% 0.07%
C 10812 8989 0 0 0.00% 0.00%
D 10812 8989 11 11 0.10% 0.12%

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 15 174 844227 3847.98 1080 1056 219.1
A 0 226 9295 37.6 1080 1056 219.1
A 3 137 8303 33.07 1080 1056 219.1
B 0 229 196818 928.11 1094 1066 210.9
B 10 245 92968 435.73 1094 1066 210.9
B 0 189 41669 192.51 1094 1066 210.9
C 14 238 161101 651.3 1045 1053 245.7
C 3 233 131619 531.33 1045 1053 245.7
C 5 218 42927 170.4 1045 1053 245.7
D 7 238 46939 173.07 1051 1023 265.3
D 2 234 34746 127.11 1051 1023 265.3
D 10 70 34102 124.68 1051 1023 265.3

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