ASTROSAT CZTI

Data Quality Report

Orbit 54689

Creation date: 2025-11-13T13:46:51.512655
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/AS1A14_066T07_9000006522_54689cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54689cztM0_level2_quad_clean.evt
Size (bytes)591,874,56095,065,920
Size564.5 MB 90.7 MB
Events in quadrant A3,241,367677,576
Events in quadrant B3,944,813715,837
Events in quadrant C3,470,465637,270
Events in quadrant D10,731,748380,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142542
B0161732
C0148992
D0365974

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704871.297733%
B67041782.655131%
C67041311.954057%
D6703276541.250186%

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 7799 6704 6 6 0.08% 0.09%
B 7799 6704 52 52 0.67% 0.78%
C 7799 6704 58 58 0.74% 0.87%
D 7798 6703 2615 2615 33.53% 39.01%

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 5 240 43212 226.5 768 751 187.5
A 3 14 35846 187.21 768 751 187.5
A 4 3 28218 146.52 768 751 187.5
B 2 249 654061 4095.78 750 726 159.5
B 7 0 118398 737.69 750 726 159.5
B 1 207 63878 395.9 750 726 159.5
C 3 242 167925 817.08 745 739 204.6
C 6 223 148789 723.56 745 739 204.6
C 12 250 102533 497.49 745 739 204.6
D 11 129 5199770 30377.27 596 570 171.2
D 11 176 1580468 9230.84 596 570 171.2
D 2 62 741869 4331.17 596 570 171.2

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