ASTROSAT CZTI

Data Quality Report

Orbit 24587

Creation date: 2024-06-27T19:07:35.903032
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/AS1T03_188T01_9000003612_24587cztM0_level2.evt modeM0/AS1T03_188T01_9000003612_24587cztM0_level2_quad_clean.evt
Size (bytes)607,429,440102,695,040
Size579.3 MB 97.9 MB
Events in quadrant A3,355,929673,246
Events in quadrant B4,792,064674,215
Events in quadrant C4,870,599635,935
Events in quadrant D4,893,910629,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146152
B0188122
C0190792
D0193802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7142710.994119%
B71425057.070849%
C71423034.242509%
D71421291.806217%

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 8032 7144 1 1 0.01% 0.01%
B 8032 7144 242 242 3.01% 3.39%
C 8032 7144 42 42 0.52% 0.59%
D 8032 7144 36 36 0.45% 0.50%

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 6 16 22785 125.47 863 842 174.9
A 13 254 11079 58.53 863 842 174.9
A 3 137 7948 40.63 863 842 174.9
B 3 64 1460379 8932.58 845 822 163.4
B 12 111 19911 116.83 845 822 163.4
B 11 111 18153 106.07 845 822 163.4
C 7 247 1100505 5659.93 830 836 194.3
C 2 16 375241 1927.04 830 836 194.3
C 14 238 132078 675.49 830 836 194.3
D 8 195 1643573 7982.28 843 819 205.8
D 1 52 58012 277.91 843 819 205.8
D 2 234 30437 143.92 843 819 205.8

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