ASTROSAT CZTI

Data Quality Report

Orbit 50117

Creation date: 2025-01-03T02:25:52.538703
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_003T01_9000006442_50117cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50117cztM0_level2_quad_clean.evt
Size (bytes)1,247,927,04053,389,440
Size1.2 GB 50.9 MB
Events in quadrant A14,156,532224,842
Events in quadrant B4,102,138645,555
Events in quadrant C15,001,90433,500
Events in quadrant D12,441,597265,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0463831
B0166301
C0489521
D0413221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6399441068.917018%
B63992273.547429%
C6400611795.578125%
D6400350454.750000%

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 7489 6400 4697 4697 62.72% 73.39%
B 7489 6400 177 177 2.36% 2.77%
C 7490 6401 4888 4888 65.26% 76.36%
D 7490 6401 3529 3529 47.12% 55.13%

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 6 250 6930871 57296.3 476 466 121.0
A 8 8 2489595 20578.58 476 466 121.0
A 0 98 1085500 8970.39 476 466 121.0
B 2 176 904447 6623.2 647 625 136.5
B 4 206 151626 1106.53 647 625 136.5
B 10 76 81808 594.91 647 625 136.5
C 4 111 5712934 93700.38 214 212 61.0
C 15 214 5433013 89109.1 214 212 61.0
C 15 178 645240 10579.78 214 212 61.0
D 12 191 3868674 26758.91 485 467 144.6
D 15 106 2010191 13902.57 485 467 144.6
D 15 218 410786 2838.44 485 467 144.6

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