ASTROSAT CZTI

Data Quality Report

Orbit 20190812_A05_088T05_9000003088_level2

Creation date: 2025-12-03T01:06:20.684642
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/AS1A05_088T05_9000003088cztM0_level2.fits modeM0/AS1A05_088T05_9000003088cztM0_level2_quad_clean.evt
Size (bytes)362,214,720282,441,600
Size345.4 MB 269.4 MB
Events in quadrant A2,296,2681,621,119
Events in quadrant B2,182,9241,610,594
Events in quadrant C2,197,0791,529,574
Events in quadrant D1,871,0341,368,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01670
C0810
D01670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0737490
B0797680
C0741760
D0931980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07160
C07200
D07160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A352922660.753712%
B353005691.611898%
C353183851.090096%
D3518914724.183125%

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 42801 34938 0 0 0.00% 0.00%
B 42802 34938 0 0 0.00% 0.00%
C 42802 34939 0 0 0.00% 0.00%
D 42802 34923 0 0 0.00% 0.00%

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 0 29 2110 10.43 598 564 148.2
A 7 110 1790 8.27 598 564 148.2
A 9 19 1721 7.81 598 564 148.2
B 2 9 1677 9.87 578 555 113.7
B 2 8 1429 7.69 578 555 113.7
B 5 225 1414 7.56 578 555 113.7
C 1 80 1737 8.02 579 543 148.8
C 1 81 1718 7.89 579 543 148.8
C 3 126 1479 6.29 579 543 148.8
D 7 3 1379 6.26 535 489 142.1
D 10 189 1357 6.11 535 489 142.1
D 3 14 1345 6.02 535 489 142.1

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