ASTROSAT CZTI

Data Quality Report

Orbit 10250

Creation date: 2024-06-27T15:57:08.375534
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/AS1A03_069T03_9000001478_10250cztM0_level2.evt modeM0/AS1A03_069T03_9000001478_10250cztM0_level2_quad_clean.evt
Size (bytes)477,694,08068,515,200
Size455.6 MB 65.3 MB
Events in quadrant A3,189,777411,413
Events in quadrant B3,432,173410,003
Events in quadrant C3,078,002400,343
Events in quadrant D4,312,924386,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01389912
B01446022
C01373023
D01746420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6696921.373955%
B66921171.748356%
C6691460.687491%
D66941221.822528%

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 7531 6701 3 3 0.04% 0.04%
B 7531 6701 5 5 0.07% 0.07%
C 7531 6701 0 0 0.00% 0.00%
D 7531 6701 45 45 0.60% 0.67%

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 15 174 24563 145.49 813 796 163.4
A 3 1 22481 132.75 813 796 163.4
A 8 15 9469 53.09 813 796 163.4
B 11 51 113888 732.57 808 790 154.4
B 4 239 50729 323.47 808 790 154.4
B 0 214 47413 301.99 808 790 154.4
C 0 207 15004 78.43 783 788 181.3
C 14 67 7073 34.67 783 788 181.3
C 13 61 5929 28.36 783 788 181.3
D 8 195 835665 4458.93 781 759 187.2
D 1 52 223152 1187.72 781 759 187.2
D 7 71 124261 659.58 781 759 187.2

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