ASTROSAT CZTI

Data Quality Report

Orbit 00742

Creation date: 2024-06-27T14:02:20.860526
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/AS1P01_010T01_9000000108_00742cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00742cztM0_level2_quad_clean.evt
Size (bytes)1,326,029,76095,544,000
Size1.2 GB 91.1 MB
Events in quadrant A8,981,949607,364
Events in quadrant B9,970,334610,708
Events in quadrant C8,922,192601,098
Events in quadrant D11,796,826559,846

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318710
B0348370
C0317010
D0403320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7388450.609096%
B73881071.448295%
C7388330.446670%
D73885948.040065%

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 7388 7388 417 417 5.64% 5.64%
B 7388 7388 687 687 9.30% 9.30%
C 7388 7388 417 417 5.64% 5.64%
D 7388 7388 1800 1800 24.36% 24.36%

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 15 233 14255 20.94 2334 2347 568.8
A 11 79 9853 13.2 2334 2347 568.8
A 12 189 8527 10.87 2334 2347 568.8
B 8 38 456095 784.05 2439 2446 578.6
B 5 191 101173 170.63 2439 2446 578.6
B 7 221 48352 79.34 2439 2446 578.6
C 3 111 45393 68.2 2250 2323 631.5
C 15 241 41467 61.98 2250 2323 631.5
C 3 79 34212 50.5 2250 2323 631.5
D 7 207 1318759 1989.24 2127 2203 661.8
D 10 85 1062864 1602.59 2127 2203 661.8
D 13 25 830248 1251.13 2127 2203 661.8

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