ASTROSAT CZTI

Data Quality Report

Orbit 19158

Creation date: 2024-06-27T17:59:37.658831
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/AS1A05_046T01_9000002838_19158cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19158cztM0_level2_quad_clean.evt
Size (bytes)1,358,611,200205,104,960
Size1.3 GB 195.6 MB
Events in quadrant A9,082,1121,235,814
Events in quadrant B9,298,1061,273,946
Events in quadrant C13,054,6991,228,051
Events in quadrant D8,478,5051,216,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0389963
B0391893
C0518973
D0379833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182494172.285057%
B182492931.605567%
C182495032.756315%
D182491810.991835%

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 20219 18250 199 199 0.98% 1.09%
B 20219 18251 72 72 0.36% 0.39%
C 20219 18250 33 33 0.16% 0.18%
D 20219 18251 31 31 0.15% 0.17%

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 15 174 666235 1501.07 2180 2133 442.4
A 13 254 21264 43.24 2180 2133 442.4
A 0 226 18552 37.11 2180 2133 442.4
B 7 220 497841 1180.07 2182 2125 420.1
B 0 197 66889 154.17 2182 2125 420.1
B 12 111 51055 116.48 2182 2125 420.1
C 3 233 4479897 9065.55 2104 2116 493.9
C 14 238 322593 648.83 2104 2116 493.9
C 0 207 39300 75.28 2104 2116 493.9
D 11 176 197164 374.38 2147 2084 521.1
D 1 52 116608 219.78 2147 2084 521.1
D 2 234 80026 149.58 2147 2084 521.1

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