ASTROSAT CZTI

Data Quality Report

Orbit 39360

Creation date: 2024-06-27T22:03:39.815049
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_018T01_9000005470_39360cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39360cztM0_level2_quad_clean.evt
Size (bytes)373,936,32086,860,800
Size356.6 MB 82.8 MB
Events in quadrant A2,574,397610,475
Events in quadrant B2,286,942631,151
Events in quadrant C2,368,153583,842
Events in quadrant D6,230,930461,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106103
B0100992
C0100392
D0219482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4900120.244898%
B4900100.204082%
C490080.163265%
D490091818.734694%

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 7023 4901 2 2 0.03% 0.04%
B 7023 4901 3 3 0.04% 0.06%
C 7023 4901 3 3 0.04% 0.06%
D 7023 4901 930 930 13.24% 18.98%

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 376021 3329.18 561 550 112.8
A 13 248 17778 152.76 561 550 112.8
A 2 79 8625 71.6 561 550 112.8
B 4 170 63794 601.0 556 542 105.2
B 5 255 35132 328.66 556 542 105.2
B 12 111 13131 119.62 556 542 105.2
C 15 214 209281 1684.47 535 538 123.9
C 9 187 44522 354.93 535 538 123.9
C 0 10 16736 130.71 535 538 123.9
D 12 235 3244237 26891.07 500 486 120.6
D 2 249 614071 5086.69 500 486 120.6
D 12 227 221060 1828.58 500 486 120.6

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