ASTROSAT CZTI

Data Quality Report

Orbit 52425

Creation date: 2025-06-28T13:38:44.907753
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/AS1A13_037T01_9000006476_52425cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52425cztM0_level2_quad_clean.evt
Size (bytes)811,719,36067,754,880
Size774.1 MB 64.6 MB
Events in quadrant A3,262,553565,152
Events in quadrant B3,045,238619,719
Events in quadrant C12,553,475243,821
Events in quadrant D10,723,138205,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01409715
B0134833
C04133324
D03592835

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59701282.144054%
B5974791.322397%
C5970365361.189280%
D5968373262.533512%

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 7160 5975 52 52 0.73% 0.87%
B 7160 5976 31 31 0.43% 0.52%
C 7159 5975 3624 3624 50.62% 60.65%
D 7159 5968 2697 2697 37.67% 45.19%

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 26 440339 2821.82 621 605 155.8
A 15 174 157527 1006.98 621 605 155.8
A 5 240 59275 376.49 621 605 155.8
B 4 171 207719 1549.38 618 596 133.7
B 4 81 112690 838.51 618 596 133.7
B 7 0 101585 755.44 618 596 133.7
C 9 38 3881440 28418.59 487 483 136.6
C 1 45 3420393 25042.54 487 483 136.6
C 15 248 1008678 7382.58 487 483 136.6
D 12 18 8034820 85874.1 317 302 93.6
D 12 17 354304 3783.63 317 302 93.6
D 6 42 281866 3009.4 317 302 93.6

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