ASTROSAT CZTI

Data Quality Report

Orbit 40636

Creation date: 2024-06-27T22:18:32.409986
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/AS1A12_029T01_9000005556_40636cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40636cztM0_level2_quad_clean.evt
Size (bytes)311,362,56085,121,280
Size296.9 MB 81.2 MB
Events in quadrant A2,729,163582,911
Events in quadrant B2,599,548603,656
Events in quadrant C2,479,747563,282
Events in quadrant D3,320,884471,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110143
B0109932
C0104212
D0133062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5079130.255956%
B5079420.826934%
C507990.177200%
D507956111.045481%

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 7172 5080 3 3 0.04% 0.06%
B 7172 5080 26 26 0.36% 0.51%
C 7172 5080 7 7 0.10% 0.14%
D 7172 5080 232 232 3.23% 4.57%

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 450419 3795.75 579 569 118.5
A 2 79 40319 335.4 579 569 118.5
A 3 137 6523 50.24 579 569 118.5
B 0 229 202930 1817.58 572 557 111.3
B 5 255 66598 593.13 572 557 111.3
B 0 190 56231 500.03 572 557 111.3
C 15 214 226348 1746.92 556 559 129.2
C 14 254 52271 400.09 556 559 129.2
C 0 10 13267 98.32 556 559 129.2
D 12 227 851697 6533.05 528 513 130.3
D 12 191 137661 1052.65 528 513 130.3
D 5 51 99771 761.83 528 513 130.3

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