ASTROSAT CZTI

Data Quality Report

Orbit 47157

Creation date: 2024-06-27T23:32:20.917500
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/AS1C09_003T01_9000006298_47157cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47157cztM0_level2_quad_clean.evt
Size (bytes)420,096,96097,727,040
Size400.6 MB 93.2 MB
Events in quadrant A5,912,112661,001
Events in quadrant B3,106,941677,810
Events in quadrant C2,510,328638,557
Events in quadrant D3,561,252568,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216551
B0133021
C0120441
D0151211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59221101.857481%
B5922821.384667%
C5922100.168862%
D59222954.981425%

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 7127 5923 22 22 0.31% 0.37%
B 7127 5923 52 52 0.73% 0.88%
C 7127 5923 2 2 0.03% 0.03%
D 7127 5923 244 244 3.42% 4.12%

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 3333463 24769.73 649 636 134.6
A 9 191 23166 167.44 649 636 134.6
A 13 248 13709 97.16 649 636 134.6
B 5 173 173482 1388.65 646 628 124.5
B 5 255 155799 1246.59 646 628 124.5
B 4 21 75394 600.65 646 628 124.5
C 14 254 40346 271.38 627 629 146.4
C 14 67 10975 70.69 627 629 146.4
C 3 233 9128 58.07 627 629 146.4
D 1 47 508508 3322.41 617 597 152.9
D 10 181 259286 1692.17 617 597 152.9
D 5 32 185219 1207.67 617 597 152.9

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