ASTROSAT CZTI

Data Quality Report

Orbit 53236

Creation date: 2025-08-01T03:15:16.845285
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_011T06_9000006490_53236cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53236cztM0_level2_quad_clean.evt
Size (bytes)896,685,12079,047,360
Size855.1 MB 75.4 MB
Events in quadrant A6,946,499550,814
Events in quadrant B11,300,449374,528
Events in quadrant C8,801,794461,410
Events in quadrant D5,650,890560,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249851
B0380031
C0306261
D0212901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386109617.162543%
B6387315949.459840%
C6386173727.200125%
D63863886.075791%

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 7511 6387 985 985 13.11% 15.42%
B 7512 6388 2642 2642 35.17% 41.36%
C 7510 6386 1519 1519 20.23% 23.79%
D 7511 6387 370 370 4.93% 5.79%

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 3192623 20010.1 632 616 159.5
A 0 8 549991 3443.93 632 616 159.5
A 7 206 204165 1276.01 632 616 159.5
B 12 33 6867714 56191.13 572 554 122.2
B 10 254 685241 5602.51 572 554 122.2
B 2 249 637667 5213.23 572 554 122.2
C 1 241 3318517 20232.67 589 584 164.0
C 15 224 2062029 12570.64 589 584 164.0
C 7 80 229559 1396.28 589 584 164.0
D 11 245 1042885 5624.41 654 624 185.3
D 15 125 487407 2626.85 654 624 185.3
D 12 3 408845 2202.91 654 624 185.3

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