ASTROSAT CZTI

Data Quality Report

Orbit 37216

Creation date: 2024-06-27T21:37:01.663997
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/AS1A11_079T01_9000005284_37216cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37216cztM0_level2_quad_clean.evt
Size (bytes)443,545,92064,537,920
Size423.0 MB 61.5 MB
Events in quadrant A2,830,175415,559
Events in quadrant B3,245,946412,479
Events in quadrant C3,181,212405,375
Events in quadrant D3,838,343372,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112463
B0126192
C0124112
D0144642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4970240.482897%
B49702214.446680%
C4970811.629779%
D49703376.780684%

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 7033 4971 7 7 0.10% 0.14%
B 7033 4971 136 136 1.93% 2.74%
C 7033 4971 68 68 0.97% 1.37%
D 7033 4971 268 268 3.81% 5.39%

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 247084 1881.52 660 650 131.0
A 15 222 24065 178.77 660 650 131.0
A 13 254 6806 47.0 660 650 131.0
B 0 213 365774 3023.18 641 627 120.8
B 5 172 343434 2838.22 641 627 120.8
B 12 111 14720 116.68 641 627 120.8
C 14 254 274600 1891.02 625 631 144.9
C 15 214 216879 1492.61 625 631 144.9
C 0 10 197962 1362.04 625 631 144.9
D 2 249 1162733 7753.09 619 602 149.9
D 13 249 98241 651.39 619 602 149.9
D 12 233 79248 524.68 619 602 149.9

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