ASTROSAT CZTI

Data Quality Report

Orbit 00787

Creation date: 2024-06-27T14:03:31.785825
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/AS1T01_001T01_9000000110_00787cztM0_level2.evt modeM0/AS1T01_001T01_9000000110_00787cztM0_level2_quad_clean.evt
Size (bytes)1,201,668,480109,388,160
Size1.1 GB 104.3 MB
Events in quadrant A9,360,091703,451
Events in quadrant B9,413,041712,770
Events in quadrant C8,657,012699,581
Events in quadrant D8,470,760680,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330270
B0332300
C0310030
D0304110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74191261.698342%
B7419801.078312%
C7420310.417790%
D7420610.822102%

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 7469 7420 519 519 6.95% 6.99%
B 7469 7420 447 447 5.98% 6.02%
C 7470 7421 311 311 4.16% 4.19%
D 7470 7421 372 372 4.98% 5.01%

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 8 192 253699 437.81 2363 2383 574.0
A 10 133 22183 34.49 2363 2383 574.0
A 12 236 18899 28.77 2363 2383 574.0
B 0 23 36163 58.36 2435 2446 577.7
B 15 22 32031 51.21 2435 2446 577.7
B 8 234 31320 49.98 2435 2446 577.7
C 9 83 57247 90.83 2171 2242 605.6
C 15 241 48013 75.58 2171 2242 605.6
C 3 111 39695 61.84 2171 2242 605.6
D 1 4 347298 515.69 2132 2209 669.2
D 13 25 75136 108.98 2132 2209 669.2
D 9 41 25981 35.52 2132 2209 669.2

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