ASTROSAT CZTI

Data Quality Report

Orbit 51713

Creation date: 2025-04-22T12:01:21.405343
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_031T01_9000006462_51713cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51713cztM0_level2_quad_clean.evt
Size (bytes)571,884,48097,701,120
Size545.4 MB 93.2 MB
Events in quadrant A5,670,192638,149
Events in quadrant B4,805,330680,233
Events in quadrant C6,421,127570,675
Events in quadrant D3,749,447598,926

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214852
B0188672
C0238472
D0157692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67444256.301898%
B67445488.125741%
C6744108116.029063%
D67441061.571767%

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 7874 6744 281 281 3.57% 4.17%
B 7874 6745 321 321 4.08% 4.76%
C 7874 6745 711 711 9.03% 10.54%
D 7874 6745 66 66 0.84% 0.98%

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 14 1734485 9837.32 723 707 176.2
A 3 78 654098 3707.29 723 707 176.2
A 12 3 148263 837.22 723 707 176.2
B 1 223 1073113 7070.19 709 685 151.7
B 10 254 272639 1792.91 709 685 151.7
B 8 128 225925 1484.94 709 685 151.7
C 12 254 1432790 7753.92 670 665 184.7
C 15 231 481019 2600.77 670 665 184.7
C 9 38 423540 2289.56 670 665 184.7
D 5 157 177358 885.49 709 681 199.5
D 3 12 144055 718.58 709 681 199.5
D 15 24 117014 583.05 709 681 199.5

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