ASTROSAT CZTI

Data Quality Report

Orbit 56404

Creation date: 2026-03-02T12:17:33.930720
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_083T05_9000006554_56404cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56404cztM0_level2_quad_clean.evt
Size (bytes)790,724,16065,384,640
Size754.1 MB 62.4 MB
Events in quadrant A11,112,985415,581
Events in quadrant B5,653,349536,292
Events in quadrant C3,580,028557,702
Events in quadrant D8,404,021925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0375360
B0213930
C0154230
D0297040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6650292043.909774%
B6650205630.917293%
C6650971.458647%
D66506650100.000000%

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 8059 6807 2658 2658 32.98% 39.05%
B 8058 6661 415 415 5.15% 6.23%
C 8059 6925 67 67 0.83% 0.97%
D 8058 6674 1882 1882 23.36% 28.20%

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 3 4821437 33884.83 570 554 142.3
A 4 95 2069410 14541.49 570 554 142.3
A 12 194 624265 4383.92 570 554 142.3
B 5 172 1919515 16539.9 548 531 116.0
B 4 206 992705 8551.64 548 531 116.0
B 4 171 268837 2312.55 548 531 116.0
C 12 254 595926 3100.68 703 697 192.0
C 12 249 130721 677.32 703 697 192.0
C 5 250 35822 182.97 703 697 192.0
D 8 129 8297298 1199347.02 18 17 6.9
D 2 31 7377 1063.87 18 17 6.9
D 2 249 5566 802.09 18 17 6.9

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