ASTROSAT CZTI

Data Quality Report

Orbit 53700

Creation date: 2025-09-01T10:59:25.958375
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_022T05_9000006504_53700cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53700cztM0_level2_quad_clean.evt
Size (bytes)643,023,36053,622,720
Size613.2 MB 51.1 MB
Events in quadrant A10,410,068143,634
Events in quadrant B3,350,898437,128
Events in quadrant C6,513,996325,145
Events in quadrant D3,163,043387,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341680
B0132840
C0226050
D0127300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4700340172.361702%
B47014178.870453%
C4701131327.930228%
D47012014.275686%

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 4699 4699 3443 3443 73.27% 73.27%
B 4700 4700 339 339 7.21% 7.21%
C 4700 4700 1325 1325 28.19% 28.19%
D 4700 4700 192 192 4.09% 4.09%

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 63 6717544 77609.11 344 336 86.6
A 3 78 1859867 21484.6 344 336 86.6
A 14 254 214784 2477.68 344 336 86.6
B 5 185 1266027 12219.89 473 457 103.6
B 4 81 83455 801.4 473 457 103.6
B 0 197 18470 173.93 473 457 103.6
C 15 224 2509680 21752.83 414 410 115.4
C 1 241 1414563 12259.28 414 410 115.4
C 15 158 305498 2644.8 414 410 115.4
D 2 37 395483 2894.12 474 451 136.5
D 1 241 346360 2534.23 474 451 136.5
D 7 70 179874 1314.5 474 451 136.5

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