ASTROSAT CZTI

Data Quality Report

Orbit 20232

Creation date: 2024-06-27T18:12:44.108814
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_117T01_9000002998_20232cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20232cztM0_level2_quad_clean.evt
Size (bytes)579,700,80094,812,480
Size552.8 MB 90.4 MB
Events in quadrant A3,231,297619,649
Events in quadrant B4,385,365615,974
Events in quadrant C3,216,706607,415
Events in quadrant D6,284,451576,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136302
B0170452
C0135282
D0232422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481440.678908%
B64801662.561728%
C6480580.895062%
D64801502.314815%

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 7561 6482 18 18 0.24% 0.28%
B 7560 6481 65 65 0.86% 1.00%
C 7560 6481 0 0 0.00% 0.00%
D 7560 6481 137 137 1.81% 2.11%

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 14 238 99334 605.29 809 791 162.8
A 4 2 15936 93.03 809 791 162.8
A 0 226 7065 38.54 809 791 162.8
B 10 245 1146085 7408.42 805 785 154.6
B 0 85 29781 187.56 805 785 154.6
B 0 198 24587 153.96 805 785 154.6
C 14 238 123408 658.97 789 796 186.1
C 3 233 16664 85.28 789 796 186.1
C 13 61 5558 25.59 789 796 186.1
D 7 238 2122424 11093.75 791 770 191.2
D 2 184 663311 3464.31 791 770 191.2
D 1 52 400215 2088.63 791 770 191.2

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