ASTROSAT CZTI

Data Quality Report

Orbit 56812

Creation date: 2026-03-29T19:30:01.818932
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_083T03_9000006562_56812cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56812cztM0_level2_quad_clean.evt
Size (bytes)590,204,16090,368,640
Size562.9 MB 86.2 MB
Events in quadrant A3,917,777642,737
Events in quadrant B8,926,591497,088
Events in quadrant C4,853,991564,854
Events in quadrant D3,645,453578,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158581
B0310161
C0189956
D0152221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64841532.359655%
B6484219133.790870%
C648365810.149622%
D64841582.436767%

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 7559 6485 27 27 0.36% 0.42%
B 7559 6485 1532 1532 20.27% 23.62%
C 7558 6484 679 679 8.98% 10.47%
D 7559 6485 102 102 1.35% 1.57%

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 3 14 734531 4115.56 722 702 178.3
A 10 251 229378 1282.49 722 702 178.3
A 12 3 93689 521.5 722 702 178.3
B 4 206 3462505 26334.78 612 592 131.5
B 5 185 1784116 13567.27 612 592 131.5
B 2 249 548599 4168.69 612 592 131.5
C 15 230 1968984 10557.44 677 669 186.4
C 14 254 61264 325.01 677 669 186.4
C 12 252 58084 307.96 677 669 186.4
D 2 249 381299 1936.01 698 666 196.6
D 2 31 194880 987.83 698 666 196.6
D 5 173 52938 265.87 698 666 196.6

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