ASTROSAT CZTI

Data Quality Report

Orbit 56148

Creation date: 2026-02-13T04:34:24.984857
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_083T04_9000006550_56148cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56148cztM0_level2_quad_clean.evt
Size (bytes)576,002,88099,103,680
Size549.3 MB 94.5 MB
Events in quadrant A5,704,942654,282
Events in quadrant B3,963,258731,861
Events in quadrant C6,456,134490,205
Events in quadrant D4,619,601606,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221380
B0170920
C0246070
D0189610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74354335.823806%
B74361542.071006%
C7436187325.188273%
D74361301.748252%

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 7435 7435 356 356 4.79% 4.79%
B 7436 7436 93 93 1.25% 1.25%
C 7436 7436 884 884 11.89% 11.89%
D 7436 7436 147 147 1.98% 1.98%

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 890690 4719.66 754 734 188.6
A 3 14 689383 3652.08 754 734 188.6
A 15 32 606434 3212.18 754 734 188.6
B 5 185 276072 1707.76 759 733 161.2
B 4 171 170840 1055.07 759 733 161.2
B 10 247 110230 679.14 759 733 161.2
C 15 147 1864017 11449.99 585 579 162.7
C 15 148 1517560 9321.17 585 579 162.7
C 12 254 459531 2820.05 585 579 162.7
D 2 249 384418 1837.54 732 698 208.8
D 8 240 269302 1286.28 732 698 208.8
D 2 120 236182 1127.67 732 698 208.8

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