ASTROSAT CZTI

Data Quality Report

Orbit 23978

Creation date: 2024-06-27T19:00:45.573997
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/AS1A07_065T01_9000003554_23978cztM0_level2.evt modeM0/AS1A07_065T01_9000003554_23978cztM0_level2_quad_clean.evt
Size (bytes)1,798,560,000242,660,160
Size1.7 GB 231.4 MB
Events in quadrant A9,088,9921,586,009
Events in quadrant B11,681,8101,590,768
Events in quadrant C9,349,7581,532,851
Events in quadrant D23,044,2171,304,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397404
B0472784
C0403974
D0817744

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193661010.521533%
B193678234.249497%
C193673251.678112%
D19367476524.603707%

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 21456 19371 0 0 0.00% 0.00%
B 21457 19372 427 427 1.99% 2.20%
C 21457 19372 18 18 0.08% 0.09%
D 21457 19371 3712 3712 17.30% 19.16%

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 13 254 31014 60.69 2348 2295 473.2
A 2 79 28343 55.05 2348 2295 473.2
A 3 137 21594 40.79 2348 2295 473.2
B 4 200 2317437 5209.14 2315 2253 444.4
B 0 197 167259 371.26 2315 2253 444.4
B 12 111 55743 120.35 2315 2253 444.4
C 14 238 356471 670.58 2253 2262 528.2
C 0 10 211806 396.7 2253 2262 528.2
C 13 61 15502 25.07 2253 2262 528.2
D 12 218 10758107 21984.07 2006 1951 489.3
D 1 52 973106 1984.9 2006 1951 489.3
D 12 250 833628 1699.83 2006 1951 489.3

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