ASTROSAT CZTI

Data Quality Report

Orbit 17257

Creation date: 2024-06-27T17:34:10.516341
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_185T04_9000002552_17257cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17257cztM0_level2_quad_clean.evt
Size (bytes)466,004,16091,025,280
Size444.4 MB 86.8 MB
Events in quadrant A3,318,164578,953
Events in quadrant B3,516,929576,789
Events in quadrant C3,333,179553,515
Events in quadrant D3,459,416550,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145672
B0153202
C0146373
D0153602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7142170.238029%
B7142971.358163%
C7141610.854222%
D7141400.560146%

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 7677 7143 0 0 0.00% 0.00%
B 7677 7143 37 37 0.48% 0.52%
C 7676 7142 0 0 0.00% 0.00%
D 7676 7142 18 18 0.23% 0.25%

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 0 23 82218 474.22 839 819 171.6
A 0 226 12393 67.43 839 819 171.6
A 12 194 6167 31.16 839 819 171.6
B 7 220 160461 984.98 839 816 162.1
B 0 197 37262 224.86 839 816 162.1
B 12 111 18975 112.04 839 816 162.1
C 14 238 125340 654.78 810 812 190.2
C 3 233 41183 212.27 810 812 190.2
C 0 79 7091 33.02 810 812 190.2
D 10 70 108013 537.12 819 793 199.6
D 1 52 70696 350.18 819 793 199.6
D 13 189 61215 302.69 819 793 199.6

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