ASTROSAT CZTI

Data Quality Report

Orbit 41984

Creation date: 2024-06-27T22:35:21.481674
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_104T01_9000005728_41984cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41984cztM0_level2_quad_clean.evt
Size (bytes)278,136,00083,707,200
Size265.3 MB 79.8 MB
Events in quadrant A2,639,287562,527
Events in quadrant B2,256,664579,984
Events in quadrant C2,339,175548,237
Events in quadrant D2,671,348494,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107353
B0101502
C0100502
D0114472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4986100.200562%
B498690.180505%
C498640.080225%
D49861272.547132%

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 6989 4987 4 4 0.06% 0.08%
B 6989 4987 2 2 0.03% 0.04%
C 6989 4987 0 0 0.00% 0.00%
D 6989 4987 92 92 1.32% 1.84%

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 491952 4361.91 552 542 112.7
A 2 79 11282 95.33 552 542 112.7
A 3 137 6067 49.04 552 542 112.7
B 0 190 33788 312.47 548 533 106.4
B 3 112 24619 226.32 548 533 106.4
B 12 0 21010 192.41 548 533 106.4
C 15 214 210618 1665.3 534 537 126.2
C 9 54 21362 165.08 534 537 126.2
C 8 79 20178 155.69 534 537 126.2
D 13 249 388673 3005.86 529 514 129.1
D 2 249 64783 497.69 529 514 129.1
D 11 6 62833 482.59 529 514 129.1

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