ASTROSAT CZTI

Data Quality Report

Orbit 36245

Creation date: 2022-06-13T13:19:02.504221
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/AS1A10_071T34_9000005178_36245cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36245cztM0_level2_quad_clean.evt
Size (bytes)473,402,88067,348,800
Size451.5 MB 64.2 MB
Events in quadrant A2,630,302431,704
Events in quadrant B4,177,199429,350
Events in quadrant C3,092,843426,059
Events in quadrant D4,088,012391,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109603
B0157952
C0122292
D0155142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514090.175097%
B514072114.027237%
C51401001.945525%
D51403246.303502%

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 7113 5141 1 1 0.01% 0.02%
B 7113 5140 488 488 6.86% 9.49%
C 7113 5141 83 83 1.17% 1.61%
D 7113 5141 328 328 4.61% 6.38%

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 179651 1425.44 630 621 125.6
A 9 143 8696 64.29 630 621 125.6
A 13 254 7616 55.69 630 621 125.6
B 5 236 1470167 13266.28 588 575 110.8
B 5 172 227976 2052.79 588 575 110.8
B 8 128 108336 972.78 588 575 110.8
C 0 207 269960 1894.65 611 616 142.2
C 0 10 220679 1547.99 611 616 142.2
C 15 214 214981 1507.91 611 616 142.2
D 12 6 1335831 9224.78 597 581 144.7
D 12 235 90628 622.1 597 581 144.7
D 2 153 90231 619.36 597 581 144.7

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