ASTROSAT CZTI

Data Quality Report

Orbit 06758

Creation date: 2024-06-27T15:11:20.913572
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/AS1A02_006T01_9000000934_06758cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06758cztM0_level2_quad_clean.evt
Size (bytes)770,918,400171,351,360
Size735.2 MB 163.4 MB
Events in quadrant A5,467,2211,126,872
Events in quadrant B5,427,4071,137,346
Events in quadrant C5,025,1941,095,340
Events in quadrant D6,661,1141,047,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240523
B0239302
C0231012
D0275032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113121451.281825%
B113121311.158062%
C11312510.450849%
D113122071.829915%

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 13772 11314 26 26 0.19% 0.23%
B 13772 11314 13 13 0.09% 0.11%
C 13772 11314 0 0 0.00% 0.00%
D 13772 11314 121 121 0.88% 1.07%

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 4 2 158251 575.55 1346 1318 272.7
A 13 251 57632 206.53 1346 1318 272.7
A 15 234 40459 143.55 1346 1318 272.7
B 0 214 127257 489.8 1354 1324 257.1
B 4 173 32723 122.12 1354 1324 257.1
B 12 111 24405 89.77 1354 1324 257.1
C 13 61 10094 29.64 1284 1290 297.0
C 12 4 7721 21.65 1284 1290 297.0
C 1 3 4950 12.32 1284 1290 297.0
D 8 195 514541 1643.34 1279 1241 312.4
D 2 216 509730 1627.94 1279 1241 312.4
D 12 220 460040 1468.86 1279 1241 312.4

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