ASTROSAT CZTI

Data Quality Report

Orbit 38303

Creation date: 2024-06-27T21:50:59.539210
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/AS1A07_145T01_9000005370_38303cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38303cztM0_level2_quad_clean.evt
Size (bytes)381,441,60090,198,720
Size363.8 MB 86.0 MB
Events in quadrant A2,641,536617,857
Events in quadrant B2,809,779636,816
Events in quadrant C2,939,353612,446
Events in quadrant D5,350,425522,500

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107463
B0113882
C0115332
D0193682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4870120.246407%
B4870681.396304%
C4870751.540041%
D487051210.513347%

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 6993 4871 7 7 0.10% 0.14%
B 6993 4871 34 34 0.49% 0.70%
C 6993 4871 71 71 1.02% 1.46%
D 6993 4871 397 397 5.68% 8.15%

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 10 83 360211 3129.6 574 564 114.9
A 12 189 33558 287.11 574 564 114.9
A 13 248 14250 119.09 574 564 114.9
B 0 183 181890 1635.48 578 564 110.9
B 5 184 134524 1208.26 578 564 110.9
B 5 172 124096 1114.2 578 564 110.9
C 2 16 408710 3088.5 574 578 132.1
C 15 214 204642 1544.24 574 578 132.1
C 0 10 27704 205.27 574 578 132.1
D 2 16 1378141 10327.7 549 535 133.4
D 13 138 1083816 8121.19 549 535 133.4
D 12 235 594001 4449.12 549 535 133.4

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