ASTROSAT CZTI

Data Quality Report

Orbit 20190228_T03_083T01_9000002742_level2

Creation date: 2025-11-28T01:37:25.739408
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/AS1T03_083T01_9000002742cztM0_level2.fits modeM0/AS1T03_083T01_9000002742cztM0_level2_quad_clean.evt
Size (bytes)279,000,000324,581,760
Size266.1 MB 309.5 MB
Events in quadrant A1,704,3802,060,073
Events in quadrant B1,627,4102,042,426
Events in quadrant C1,665,4621,948,317
Events in quadrant D1,459,2481,786,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680300
B0709620
C0616750
D0637710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289917842.704288%
B2899112184.201304%
C289914441.531510%
D289913491.203822%

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 33701 28986 0 0 0.00% 0.00%
B 33701 28984 0 0 0.00% 0.00%
C 33701 28986 0 0 0.00% 0.00%
D 33701 28985 0 0 0.00% 0.00%

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 7 110 1441 9.16 443 417 111.8
A 0 29 1420 8.97 443 417 111.8
A 9 19 1337 8.23 443 417 111.8
B 2 9 1332 10.71 430 411 86.0
B 2 8 1099 8.0 430 411 86.0
B 14 254 1083 7.81 430 411 86.0
C 2 191 1168 6.67 439 412 113.3
C 3 158 1139 6.42 439 412 113.3
C 9 233 1123 6.28 439 412 113.3
D 4 246 1141 6.79 415 377 112.6
D 10 190 1084 6.28 415 377 112.6
D 3 14 1067 6.13 415 377 112.6

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