ASTROSAT CZTI

Data Quality Report

Orbit 20210228_A10_050T03_9000004216_level2

Creation date: 2025-12-20T21:47:53.021990
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/AS1A10_050T03_9000004216cztM0_level2.fits modeM0/AS1A10_050T03_9000004216cztM0_level2_quad_clean.evt
Size (bytes)927,538,560797,558,400
Size884.6 MB 760.6 MB
Events in quadrant A6,099,9625,033,088
Events in quadrant B5,684,8184,976,983
Events in quadrant C5,849,3924,789,705
Events in quadrant D3,613,8382,537,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020220
B020220
C020220
D020220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100990
B02461840
C02422980
D05523420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9944812131.219733%
B9944845294.554139%
C9944832653.283123%
D994485181552.102606%

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 113068 99446 0 0 0.00% 0.00%
B 113068 99396 0 0 0.00% 0.00%
C 113068 99444 0 0 0.00% 0.00%
D 113068 98991 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 0 29 5203 9.61 1590 1490 386.4
A 7 110 4878 8.77 1590 1490 386.4
A 0 30 4573 7.98 1590 1490 386.4
B 2 9 4595 10.59 1506 1434 298.4
B 2 8 3842 8.07 1506 1434 298.4
B 5 128 3772 7.83 1506 1434 298.4
C 12 241 4046 6.63 1550 1450 391.5
C 9 209 3927 6.33 1550 1450 391.5
C 3 187 3927 6.33 1550 1450 391.5
D 15 46 2745 6.59 1034 945 273.3
D 3 14 2584 6.0 1034 945 273.3
D 6 231 2565 5.93 1034 945 273.3

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