ASTROSAT CZTI

Data Quality Report

Orbit 46391

Creation date: 2024-06-27T23:22:35.964535
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/AS1A13_070T06_9000006202_46391cztM0_level2.fits modeM0/AS1A13_070T06_9000006202_46391cztM0_level2_quad_clean.evt
Size (bytes)229,656,96041,647,680
Size219.0 MB 39.7 MB
Events in quadrant A3,960,643216,903
Events in quadrant B1,338,333304,720
Events in quadrant C1,429,474283,381
Events in quadrant D1,559,742261,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135001
B058641
C061501
D064951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271579329.208103%
B2715301.104972%
C2715541.988950%
D2715240.883978%

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 2716 2716 664 664 24.45% 24.45%
B 2716 2716 10 10 0.37% 0.37%
C 2716 2716 33 33 1.22% 1.22%
D 2716 2716 21 21 0.77% 0.77%

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 0 247 1719259 31094.98 262 256 55.3
A 10 83 1123082 20310.76 262 256 55.3
A 0 226 98140 1770.62 262 256 55.3
B 5 32 72927 1173.13 303 294 61.9
B 0 190 42036 674.2 303 294 61.9
B 4 171 20239 322.14 303 294 61.9
C 14 254 219283 3050.85 299 300 71.8
C 3 233 36019 497.63 299 300 71.8
C 12 249 7413 99.1 299 300 71.8
D 13 249 167929 2170.39 302 290 77.2
D 1 52 160318 2071.85 302 290 77.2
D 13 138 30935 396.75 302 290 77.2

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