ASTROSAT CZTI

Data Quality Report

Orbit 15454

Creation date: 2024-06-27T17:09:02.811075
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/AS1T02_077T01_9000002282_15454cztM0_level2.evt modeM0/AS1T02_077T01_9000002282_15454cztM0_level2_quad_clean.evt
Size (bytes)102,271,6804,466,880
Size97.5 MB 4.3 MB
Events in quadrant A777,5209,102
Events in quadrant B739,7559,392
Events in quadrant C767,2309,141
Events in quadrant D720,8198,633

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031042
B029571
C031111
D028661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1303251.918649%
B1303161.227936%
C1303141.074444%
D1303181.381427%

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 1304 1304 5 5 0.38% 0.38%
B 1304 1304 0 0 0.00% 0.00%
C 1304 1304 0 0 0.00% 0.00%
D 1304 1304 2 2 0.15% 0.15%

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 14 238 39760 1030.98 185 181 38.4
A 14 237 14198 365.12 185 181 38.4
A 7 16 10256 262.44 185 181 38.4
B 0 214 9159 247.45 185 181 36.3
B 0 189 5434 144.78 185 181 36.3
B 12 111 3993 105.07 185 181 36.3
C 3 233 45124 1041.68 183 184 43.1
C 9 54 2158 45.74 183 184 43.1
C 14 225 1467 29.73 183 184 43.1
D 10 70 9249 198.83 183 177 45.6
D 5 222 6915 147.68 183 177 45.6
D 15 0 4721 99.59 183 177 45.6

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