ASTROSAT CZTI

Data Quality Report

Orbit 39402

Creation date: 2024-06-27T22:04:07.096341
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_39402cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39402cztM0_level2_quad_clean.evt
Size (bytes)427,273,92089,962,560
Size407.5 MB 85.8 MB
Events in quadrant A3,517,805607,683
Events in quadrant B2,407,637654,879
Events in quadrant C2,529,009624,197
Events in quadrant D6,960,784476,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137733
B0105612
C0107852
D0242522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51582595.021326%
B515890.174486%
C515830.058162%
D5158110821.481194%

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 7131 5159 190 190 2.66% 3.68%
B 7131 5159 2 2 0.03% 0.04%
C 7131 5159 1 1 0.01% 0.02%
D 7131 5159 1004 1004 14.08% 19.46%

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 13 248 852711 7235.02 577 566 117.8
A 10 83 405837 3440.9 577 566 117.8
A 13 6 10417 83.64 577 566 117.8
B 5 172 67649 595.63 588 573 112.6
B 5 255 17582 151.04 588 573 112.6
B 12 111 14131 120.39 588 573 112.6
C 15 214 219135 1648.38 577 583 132.6
C 9 187 28043 207.11 577 583 132.6
C 7 220 15016 108.86 577 583 132.6
D 12 235 3694650 29161.97 520 505 126.7
D 13 249 1008098 7954.04 520 505 126.7
D 2 249 209940 1653.3 520 505 126.7

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