ASTROSAT CZTI

Data Quality Report

Orbit 38493

Creation date: 2024-06-27T21:53:30.779573
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_018T01_9000005386_38493cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38493cztM0_level2_quad_clean.evt
Size (bytes)355,115,52089,424,000
Size338.7 MB 85.3 MB
Events in quadrant A3,334,348618,862
Events in quadrant B3,017,762616,291
Events in quadrant C2,495,041593,649
Events in quadrant D3,897,635518,882

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135933
B0122332
C0104882
D0150672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5141561.089282%
B51411332.587045%
C5141130.252869%
D51414198.150165%

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 7204 5142 37 37 0.51% 0.72%
B 7204 5142 105 105 1.46% 2.04%
C 7204 5142 10 10 0.14% 0.19%
D 7204 5142 370 370 5.14% 7.20%

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 15 222 505887 4314.85 583 571 117.1
A 10 83 398650 3399.16 583 571 117.1
A 9 143 104548 887.85 583 571 117.1
B 5 184 253932 2320.16 574 557 109.2
B 4 171 129601 1181.66 574 557 109.2
B 8 3 94973 864.57 574 557 109.2
C 15 214 214780 1638.12 569 571 130.8
C 2 16 28707 215.16 569 571 130.8
C 0 10 20455 152.06 569 571 130.8
D 10 118 543424 4066.68 550 535 133.5
D 7 223 382056 2857.9 550 535 133.5
D 13 249 335372 2508.2 550 535 133.5

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