ASTROSAT CZTI

Data Quality Report

Orbit 53264

Creation date: 2025-08-03T00:04:04.164323
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/AS1C09_011T08_9000006492_53264cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53264cztM0_level2_quad_clean.evt
Size (bytes)581,932,80093,182,400
Size555.0 MB 88.9 MB
Events in quadrant A4,840,005623,639
Events in quadrant B3,639,735691,633
Events in quadrant C7,922,473477,150
Events in quadrant D4,618,632561,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190672
B0154802
C0283405
D0183642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67034015.982396%
B67041211.804893%
C6703167424.973892%
D67033895.803372%

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 7708 6703 355 355 4.61% 5.30%
B 7709 6704 58 58 0.75% 0.87%
C 7708 6703 1467 1467 19.03% 21.89%
D 7708 6703 343 343 4.45% 5.12%

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 62 1044119 5918.74 706 689 176.3
A 7 206 248230 1404.15 706 689 176.3
A 3 14 245081 1386.29 706 689 176.3
B 2 249 196805 1300.1 709 686 150.8
B 4 171 123393 813.44 709 686 150.8
B 0 213 99432 654.6 709 686 150.8
C 9 38 2252210 13193.93 626 620 170.7
C 15 224 1084218 6349.7 626 620 170.7
C 15 198 1008245 5904.51 626 620 170.7
D 10 172 630906 3227.96 686 656 195.2
D 3 12 504981 2583.01 686 656 195.2
D 12 3 200520 1023.65 686 656 195.2

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