ASTROSAT CZTI

Data Quality Report

Orbit 40777

Creation date: 2024-06-27T22:20:19.880113
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/AS1C07_001T10_9000005566_40777cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40777cztM0_level2_quad_clean.evt
Size (bytes)79,917,12018,662,400
Size76.2 MB 17.8 MB
Events in quadrant A705,635131,041
Events in quadrant B560,522137,033
Events in quadrant C900,414117,869
Events in quadrant D706,17298,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027781
B022981
C033271
D028071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105880.756144%
B105850.472590%
C105811410.775047%
D105821119.943289%

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 1058 1058 5 5 0.47% 0.47%
B 1058 1058 2 2 0.19% 0.19%
C 1058 1058 90 90 8.51% 8.51%
D 1058 1058 15 15 1.42% 1.42%

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 163056 5755.62 127 124 28.3
A 12 189 27478 966.29 127 124 28.3
A 2 79 19415 681.46 127 124 28.3
B 0 190 27464 1031.97 128 124 26.5
B 5 255 11369 424.45 128 124 26.5
B 0 229 6302 233.19 128 124 26.5
C 9 187 315625 10208.93 124 125 30.9
C 0 10 49999 1613.82 124 125 30.9
C 15 214 47681 1538.81 124 125 30.9
D 12 227 88244 2879.25 117 113 30.6
D 2 249 48788 1590.22 117 113 30.6
D 12 191 43361 1412.92 117 113 30.6

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