ASTROSAT CZTI

Data Quality Report

Orbit 55828

Creation date: 2026-01-22T15:37:27.516033
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_127T10_9000006542_55828cztM0_level2.fits modeM0/AS1A14_127T10_9000006542_55828cztM0_level2_quad_clean.evt
Size (bytes)567,745,92099,797,760
Size541.4 MB 95.2 MB
Events in quadrant A8,693,629534,942
Events in quadrant B3,055,574732,284
Events in quadrant C3,023,651661,293
Events in quadrant D5,665,285575,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309460
B0150310
C0151060
D0223451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7437160321.554390%
B743890.121000%
C743870.094111%
D74376608.874546%

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 7437 7437 1804 1804 24.26% 24.26%
B 7438 7438 0 0 0.00% 0.00%
C 7438 7438 6 6 0.08% 0.08%
D 7437 7437 695 695 9.35% 9.35%

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 12 115 4995865 28105.98 713 694 177.7
A 8 192 196555 1102.04 713 694 177.7
A 0 8 194747 1091.86 713 694 177.7
B 0 213 50061 305.83 747 721 161.3
B 12 111 19513 116.48 747 721 161.3
B 11 111 18595 110.79 747 721 161.3
C 6 223 44915 215.82 739 733 204.7
C 15 131 30330 144.58 739 733 204.7
C 12 252 24411 115.66 739 733 204.7
D 11 129 2404194 11868.5 713 682 202.5
D 3 12 167669 824.58 713 682 202.5
D 7 96 81579 399.47 713 682 202.5

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