ASTROSAT CZTI

Data Quality Report

Orbit 56806

Creation date: 2026-03-29T11:56:51.892368
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_56806cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56806cztM0_level2_quad_clean.evt
Size (bytes)1,204,185,600187,145,280
Size1.1 GB 178.5 MB
Events in quadrant A7,314,0511,324,300
Events in quadrant B20,734,465950,220
Events in quadrant C7,704,1921,224,032
Events in quadrant D7,691,4801,159,621

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319102
B0717622
C0340145
D0336642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145952291.569030%
B14596549237.626747%
C145944803.289023%
D145963322.274596%

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 15295 14596 97 97 0.63% 0.66%
B 15295 14596 4599 4599 30.07% 31.51%
C 15296 14595 383 383 2.50% 2.62%
D 15296 14597 269 269 1.76% 1.84%

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 751846 1992.69 1539 1496 376.6
A 10 251 330215 872.97 1539 1496 376.6
A 3 62 81890 213.5 1539 1496 376.6
B 5 172 7921510 29491.52 1251 1202 268.6
B 5 185 4054204 15091.48 1251 1202 268.6
B 4 206 2751670 10241.46 1251 1202 268.6
C 15 230 1017027 2543.21 1478 1467 399.3
C 9 38 497187 1241.41 1478 1467 399.3
C 14 96 158973 394.43 1478 1467 399.3
D 2 249 1164937 2793.92 1487 1423 416.4
D 8 160 230389 549.81 1487 1423 416.4
D 5 173 140655 334.33 1487 1423 416.4

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