ASTROSAT CZTI

Data Quality Report

Orbit 28738

Creation date: 2024-06-27T19:55:38.964192
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/AS1A10_123T07_9000004124_28738cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28738cztM0_level2_quad_clean.evt
Size (bytes)718,162,56088,778,880
Size684.9 MB 84.7 MB
Events in quadrant A4,682,587544,284
Events in quadrant B4,693,946547,954
Events in quadrant C5,188,910526,247
Events in quadrant D6,651,462522,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191153
B0191173
C0209765
D0251653

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78694615.858432%
B78704045.133418%
C78695296.722582%
D78695797.357987%

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 8269 7870 171 171 2.07% 2.17%
B 8270 7870 80 80 0.97% 1.02%
C 8269 7869 3 3 0.04% 0.04%
D 8269 7871 277 277 3.35% 3.52%

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 14 239 916865 4627.43 973 950 197.9
A 13 254 16144 76.76 973 950 197.9
A 3 137 9779 44.61 973 950 197.9
B 5 255 476483 2563.56 968 943 185.5
B 10 245 291754 1567.72 968 943 185.5
B 4 80 50675 268.1 968 943 185.5
C 3 233 1348933 6249.77 924 928 215.7
C 14 238 181324 836.37 924 928 215.7
C 14 254 50962 231.97 924 928 215.7
D 8 195 1423758 6272.65 946 918 226.8
D 1 52 969173 4268.59 946 918 226.8
D 12 233 290437 1276.36 946 918 226.8

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