ASTROSAT CZTI

Data Quality Report

Orbit 55360

Creation date: 2025-12-22T02:27:52.689149
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_009T01_9000006534_55360cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55360cztM0_level2_quad_clean.evt
Size (bytes)381,116,16094,947,840
Size363.5 MB 90.5 MB
Events in quadrant A2,957,991620,119
Events in quadrant B3,100,429663,820
Events in quadrant C3,552,169588,445
Events in quadrant D3,999,652556,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01322
D01322

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013709120
B013906156
C015472434
D016648140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398290.453267%
B6399580.906392%
C6365701.099764%
D63991612.516018%

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 7571 6433 12 12 0.16% 0.19%
B 7571 6434 12 12 0.16% 0.19%
C 7568 6403 54 54 0.71% 0.84%
D 7571 6435 133 133 1.76% 2.07%

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 105262 625.22 677 659 167.3
A 3 14 81366 482.39 677 659 167.3
A 0 8 67567 399.91 677 659 167.3
B 0 199 178223 1232.15 671 647 144.1
B 5 185 79094 544.32 671 647 144.1
B 9 254 61911 425.09 671 647 144.1
C 9 38 387187 2124.63 662 655 181.9
C 12 249 213202 1168.3 662 655 181.9
C 13 3 89723 489.58 662 655 181.9
D 11 176 424616 2258.96 662 633 187.7
D 11 129 371772 1977.41 662 633 187.7
D 2 31 250836 1333.07 662 633 187.7

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