ASTROSAT CZTI

Data Quality Report

Orbit 39288

Creation date: 2024-06-27T22:02:44.107898
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_025T12_9000005458_39288cztM0_level2.fits modeM0/AS1A12_025T12_9000005458_39288cztM0_level2_quad_clean.evt
Size (bytes)556,473,60078,629,760
Size530.7 MB 75.0 MB
Events in quadrant A2,857,101635,188
Events in quadrant B2,633,452649,165
Events in quadrant C2,811,494619,341
Events in quadrant D11,907,813126,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113233
B0108312
C0112352
D0388782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4997120.240144%
B4997901.801081%
C499780.160096%
D4997411882.409446%

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 7149 4998 5 5 0.07% 0.10%
B 7149 4998 62 62 0.87% 1.24%
C 7149 4998 4 4 0.06% 0.08%
D 7149 4997 3776 3776 52.82% 75.57%

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 420764 3406.34 609 597 123.3
A 15 222 72246 580.87 609 597 123.3
A 13 248 11931 91.89 609 597 123.3
B 5 172 250576 2169.61 599 584 115.2
B 0 190 21117 178.2 599 584 115.2
B 12 111 13779 114.52 599 584 115.2
C 9 187 270486 1960.24 591 596 137.7
C 15 214 211844 1534.32 591 596 137.7
C 0 10 11451 78.84 591 596 137.7
D 12 235 10361787 124351.6 334 324 83.3
D 5 222 175550 2102.95 334 324 83.3
D 2 120 28052 332.77 334 324 83.3

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