ASTROSAT CZTI

Data Quality Report

Orbit 21335

Creation date: 2024-06-27T18:26:31.727247
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_108T01_9000003146_21335cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21335cztM0_level2_quad_clean.evt
Size (bytes)503,231,04086,748,480
Size479.9 MB 82.7 MB
Events in quadrant A3,667,225553,133
Events in quadrant B3,748,003562,665
Events in quadrant C3,639,495530,002
Events in quadrant D3,739,784523,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151862
B0154942
C0150902
D0155392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65681161.766139%
B65681271.933618%
C65681852.816687%
D65681352.055420%

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 7878 6568 3 3 0.04% 0.05%
B 7878 6568 5 5 0.06% 0.08%
C 7878 6568 23 23 0.29% 0.35%
D 7878 6568 16 16 0.20% 0.24%

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 5 168 75137 405.5 928 913 183.0
A 13 254 10007 49.68 928 913 183.0
A 0 226 8133 39.44 928 913 183.0
B 0 230 57829 332.2 921 903 171.4
B 3 64 43554 248.89 921 903 171.4
B 12 111 19674 109.54 921 903 171.4
C 14 238 142127 706.62 875 884 199.9
C 10 23 76293 377.26 875 884 199.9
C 13 61 6081 26.0 875 884 199.9
D 1 52 171422 801.91 888 865 212.7
D 13 174 111929 522.19 888 865 212.7
D 13 172 42460 195.57 888 865 212.7

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