ASTROSAT CZTI

Data Quality Report

Orbit 30378

Creation date: 2024-06-27T20:14:27.942619
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/AS1T04_003T01_9000004368_30378cztM0_level2.evt modeM0/AS1T04_003T01_9000004368_30378cztM0_level2_quad_clean.evt
Size (bytes)744,442,560109,249,920
Size710.0 MB 104.2 MB
Events in quadrant A4,434,490672,014
Events in quadrant B7,164,089676,478
Events in quadrant C4,696,623657,137
Events in quadrant D5,613,990650,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192151
B0285941
C0195671
D0228241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9410870.924548%
B94101521.615303%
C94101491.583422%
D94111811.923281%

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 10175 9410 0 0 0.00% 0.00%
B 10175 9410 22 22 0.22% 0.23%
C 10175 9410 1 1 0.01% 0.01%
D 10176 9411 111 111 1.09% 1.18%

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 14 239 20970 86.22 1138 1111 230.3
A 13 254 18196 74.18 1138 1111 230.3
A 3 137 11736 46.13 1138 1111 230.3
B 6 159 2577650 11951.34 1123 1095 215.6
B 6 36 45924 207.94 1123 1095 215.6
B 15 32 43821 198.18 1123 1095 215.6
C 3 233 216941 845.77 1091 1097 255.2
C 14 238 186212 725.36 1091 1097 255.2
C 2 114 22273 82.98 1091 1097 255.2
D 13 104 619205 2355.81 1099 1076 262.4
D 2 250 304506 1156.43 1099 1076 262.4
D 8 195 159692 604.52 1099 1076 262.4

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