ASTROSAT CZTI

Data Quality Report

Orbit 15975

Creation date: 2024-06-27T17:15:55.789956
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_087T01_9000002352_15975cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15975cztM0_level2_quad_clean.evt
Size (bytes)90,204,48025,024,320
Size86.0 MB 23.9 MB
Events in quadrant A697,971167,478
Events in quadrant B662,720170,790
Events in quadrant C643,360162,181
Events in quadrant D635,814158,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029130
B026950
C026880
D027050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130820.152905%
B130820.152905%
C130870.535168%
D130870.535168%

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 1309 1309 0 0 0.00% 0.00%
B 1309 1309 0 0 0.00% 0.00%
C 1309 1309 3 3 0.23% 0.23%
D 1309 1309 6 6 0.46% 0.46%

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 11 29 68074 1903.19 163 160 35.7
A 0 226 1461 36.46 163 160 35.7
A 12 194 1214 29.54 163 160 35.7
B 0 219 17352 515.14 160 155 33.4
B 15 222 5695 165.95 160 155 33.4
B 0 229 3767 108.2 160 155 33.4
C 14 238 23457 620.49 153 154 37.6
C 0 207 18045 476.38 153 154 37.6
C 3 233 3509 89.33 153 154 37.6
D 2 120 14433 357.31 157 152 40.0
D 10 70 11460 282.92 157 152 40.0
D 2 152 9623 236.96 157 152 40.0

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