ASTROSAT CZTI

Data Quality Report

Orbit 56612

Creation date: 2026-03-16T08:41:17.176027
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_083T06_9000006558_56612cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56612cztM0_level2_quad_clean.evt
Size (bytes)520,551,360109,431,360
Size496.4 MB 104.4 MB
Events in quadrant A3,749,446726,004
Events in quadrant B4,202,057765,815
Events in quadrant C4,458,011670,330
Events in quadrant D6,256,183612,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172212
B0181932
C0192192
D0241742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77631822.344454%
B77643684.739825%
C77643985.126224%
D77645877.560536%

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 8833 7765 80 80 0.91% 1.03%
B 8834 7766 117 117 1.32% 1.51%
C 8834 7766 216 216 2.45% 2.78%
D 8834 7766 428 428 4.84% 5.51%

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 247663 1189.18 845 822 207.6
A 0 8 102376 489.25 845 822 207.6
A 4 249 76374 363.98 845 822 207.6
B 0 231 380153 2138.49 834 803 177.4
B 10 247 143291 803.24 834 803 177.4
B 5 185 85369 476.72 834 803 177.4
C 15 219 676230 3081.23 814 806 219.2
C 12 252 252109 1146.42 814 806 219.2
C 1 12 116523 527.89 814 806 219.2
D 10 199 1370735 6150.4 798 760 222.7
D 2 249 751896 3372.17 798 760 222.7
D 6 239 264344 1183.34 798 760 222.7

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