ASTROSAT CZTI

Data Quality Report

Orbit 39912

Creation date: 2024-06-27T22:10:13.522189
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_068T03_9000005508_39912cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39912cztM0_level2_quad_clean.evt
Size (bytes)375,998,40082,739,520
Size358.6 MB 78.9 MB
Events in quadrant A2,695,938575,929
Events in quadrant B2,524,490586,699
Events in quadrant C3,070,258550,529
Events in quadrant D5,244,359446,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107343
B0106082
C0120052
D0189208

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492260.121902%
B4922280.568874%
C49221352.742787%
D492182316.724243%

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 7015 4923 4 4 0.06% 0.08%
B 7014 4921 18 18 0.26% 0.37%
C 7014 4921 128 128 1.82% 2.60%
D 7014 4921 863 863 12.30% 17.54%

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 450100 3883.59 571 563 115.8
A 13 248 14893 123.8 571 563 115.8
A 13 254 7823 62.72 571 563 115.8
B 0 230 73149 657.97 563 549 110.3
B 0 229 69144 621.67 563 549 110.3
B 5 32 63251 568.26 563 549 110.3
C 9 54 596990 4630.44 551 556 128.8
C 15 214 224112 1735.59 551 556 128.8
C 14 254 65641 505.29 551 556 128.8
D 12 233 1046541 8054.12 525 511 129.9
D 1 47 988191 7604.84 525 511 129.9
D 2 249 435162 3346.68 525 511 129.9

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