ASTROSAT CZTI

Data Quality Report

Orbit 25012

Creation date: 2024-06-27T19:12:44.235875
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_027T16_9000003666_25012cztM0_level2.evt modeM0/AS1A07_027T16_9000003666_25012cztM0_level2_quad_clean.evt
Size (bytes)405,469,44072,987,840
Size386.7 MB 69.6 MB
Events in quadrant A2,022,687506,123
Events in quadrant B2,543,411511,247
Events in quadrant C5,227,462432,816
Events in quadrant D2,218,262481,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084431
B0100561
C0182271
D091291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3937260.660401%
B39371794.546609%
C3937123431.343663%
D3937200.508001%

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 5352 3938 0 0 0.00% 0.00%
B 5352 3938 97 97 1.81% 2.46%
C 5352 3938 930 930 17.38% 23.62%
D 5352 3938 6 6 0.11% 0.15%

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 5785 50.36 525 515 104.7
A 0 226 4603 39.06 525 515 104.7
A 3 137 4520 38.27 525 515 104.7
B 6 36 490986 5053.27 519 508 97.1
B 0 190 19522 195.9 519 508 97.1
B 12 111 11445 112.68 519 508 97.1
C 7 247 3292677 30103.46 472 476 109.4
C 14 238 76638 696.42 472 476 109.4
C 7 226 9334 81.0 472 476 109.4
D 8 195 171321 1381.15 514 500 123.7
D 10 70 66327 532.24 514 500 123.7
D 2 153 19773 155.83 514 500 123.7

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