ASTROSAT CZTI

Data Quality Report

Orbit 51824

Creation date: 2025-04-28T06:15:36.757511
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/AS1A13_090T01_9000006464_51824cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51824cztM0_level2_quad_clean.evt
Size (bytes)810,552,96090,849,600
Size773.0 MB 86.6 MB
Events in quadrant A4,398,285663,411
Events in quadrant B7,134,340637,078
Events in quadrant C4,648,233632,177
Events in quadrant D13,265,460315,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181762
B0262142
C0190412
D0443402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72031211.679856%
B7203117316.284881%
C72033074.262113%
D7203381652.977926%

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 8643 7205 42 42 0.49% 0.58%
B 8643 7205 600 600 6.94% 8.33%
C 8643 7205 216 216 2.50% 3.00%
D 8643 7205 3103 3103 35.90% 43.07%

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 3 240373 1251.58 779 760 191.4
A 3 14 196813 1024.05 779 760 191.4
A 5 240 165340 859.65 779 760 191.4
B 10 128 1392693 8801.75 731 704 158.1
B 1 223 958203 6054.4 731 704 158.1
B 5 185 378245 2387.25 731 704 158.1
C 15 218 709982 3433.92 751 745 206.5
C 14 245 320059 1546.03 751 745 206.5
C 0 192 191924 925.63 751 745 206.5
D 11 129 9306274 60843.59 549 530 152.9
D 3 12 658633 4302.86 549 530 152.9
D 0 18 403384 2633.97 549 530 152.9

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