ASTROSAT CZTI

Data Quality Report

Orbit 39629

Creation date: 2024-06-27T22:07:02.334747
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/AS1A12_018T01_9000005488_39629cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39629cztM0_level2_quad_clean.evt
Size (bytes)804,366,720146,344,320
Size767.1 MB 139.6 MB
Events in quadrant A4,982,7531,051,638
Events in quadrant B4,811,5471,064,687
Events in quadrant C11,600,154799,248
Events in quadrant D7,639,917852,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204073
B0212122
C0408522
D0292592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9558150.156937%
B95581861.946014%
C9558228323.885750%
D955897310.179954%

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 12485 9560 7 7 0.06% 0.07%
B 12485 9560 116 116 0.93% 1.21%
C 12485 9560 2047 2047 16.40% 21.41%
D 12485 9560 796 796 6.38% 8.33%

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 649774 3094.11 1042 1022 209.7
A 15 222 219187 1040.5 1042 1022 209.7
A 6 10 70592 331.8 1042 1022 209.7
B 5 172 552221 2771.5 1026 995 198.9
B 5 255 221320 1107.77 1026 995 198.9
B 12 111 25010 120.74 1026 995 198.9
C 9 187 5668821 27340.34 899 903 207.3
C 15 208 1981744 9554.98 899 903 207.3
C 15 214 350867 1688.12 899 903 207.3
D 13 249 3137534 13276.73 967 939 236.2
D 1 52 374082 1579.46 967 939 236.2
D 2 249 165116 694.94 967 939 236.2

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