ASTROSAT CZTI

Data Quality Report

Orbit 01783

Creation date: 2024-06-27T14:12:38.355267
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/AS1G02_020T01_9000000296_01783cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01783cztM0_level2_quad_clean.evt
Size (bytes)1,180,552,32095,474,880
Size1.1 GB 91.1 MB
Events in quadrant A9,051,369608,166
Events in quadrant B8,684,733619,025
Events in quadrant C8,750,949595,581
Events in quadrant D8,808,054585,928

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318142
B0307132
C0309012
D03107812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6930310.447330%
B6930200.288600%
C6930300.432900%
D69281392.006351%

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 7580 6931 365 365 4.82% 5.27%
B 7580 6931 336 336 4.43% 4.85%
C 7580 6931 309 309 4.08% 4.46%
D 7580 6930 503 503 6.64% 7.26%

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 0 231 547622 1024.2 2210 2221 532.5
A 13 9 27374 47.23 2210 2221 532.5
A 15 233 11770 17.93 2210 2221 532.5
B 15 85 27973 47.75 2265 2278 538.1
B 0 234 27924 47.66 2265 2278 538.1
B 0 244 22455 37.5 2265 2278 538.1
C 8 208 708006 1233.3 2053 2126 572.3
C 10 82 10449 14.54 2053 2126 572.3
C 14 48 9955 13.68 2053 2126 572.3
D 7 85 324135 517.22 2020 2097 622.6
D 13 138 317321 506.28 2020 2097 622.6
D 13 53 286998 457.58 2020 2097 622.6

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