ASTROSAT CZTI

Data Quality Report

Orbit 36697

Creation date: 2024-06-27T21:30:25.664655
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/AS1C07_001T09_9000005236_36697cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36697cztM0_level2_quad_clean.evt
Size (bytes)382,677,12096,701,760
Size364.9 MB 92.2 MB
Events in quadrant A2,465,811660,918
Events in quadrant B2,487,739668,107
Events in quadrant C3,091,953639,033
Events in quadrant D3,208,398614,589

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102793
B0104852
C0120752
D0127132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492580.162437%
B4925340.690355%
C49251603.248731%
D49251442.923858%

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 7048 4926 1 1 0.01% 0.02%
B 7048 4926 11 11 0.16% 0.22%
C 7048 4926 136 136 1.93% 2.76%
D 7048 4926 111 111 1.57% 2.25%

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 10 83 207126 1784.84 577 567 115.7
A 9 143 10420 85.14 577 567 115.7
A 13 254 7732 61.91 577 567 115.7
B 5 255 91102 845.48 570 558 107.1
B 0 190 36694 337.43 570 558 107.1
B 0 189 26012 237.68 570 558 107.1
C 0 10 426642 3415.49 546 551 124.8
C 14 254 254031 2031.86 546 551 124.8
C 15 214 224160 1792.42 546 551 124.8
D 2 153 498173 3694.32 554 538 134.7
D 12 233 123625 913.77 554 538 134.7
D 2 137 97338 718.62 554 538 134.7

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