ASTROSAT CZTI

Data Quality Report

Orbit 57486

Creation date: 2026-05-14T04:14:15.825439
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_113T09_9000006574_57486cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57486cztM0_level2_quad_clean.evt
Size (bytes)507,890,88098,968,320
Size484.4 MB 94.4 MB
Events in quadrant A3,844,285636,994
Events in quadrant B4,506,868682,871
Events in quadrant C5,836,012588,444
Events in quadrant D4,027,667563,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01553
C01542
D01542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017456316
B019181307
C023125415
D017617261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75381692.241974%
B75394185.544502%
C75295186.880064%
D7537981.300252%

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 8242 7826 122 122 1.48% 1.56%
B 8243 7830 126 126 1.53% 1.61%
C 8243 7818 430 430 5.22% 5.50%
D 8243 7829 86 86 1.04% 1.10%

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 13 248 549170 2705.22 821 798 202.7
A 7 64 25714 122.92 821 798 202.7
A 7 14 21106 100.18 821 798 202.7
B 4 206 876984 5091.31 803 774 172.1
B 5 185 95800 552.16 803 774 172.1
B 0 245 55421 317.53 803 774 172.1
C 15 224 2524203 12049.61 772 764 209.4
C 14 254 166758 792.63 772 764 209.4
C 12 252 50844 239.13 772 764 209.4
D 8 240 156454 694.25 794 758 224.3
D 15 142 138183 612.78 794 758 224.3
D 12 128 91029 402.52 794 758 224.3

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