ASTROSAT CZTI

Data Quality Report

Orbit 30522

Creation date: 2024-06-27T20:16:23.134350
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/AS1C05_019T04_9000004388_30522cztM0_level2.evt modeM0/AS1C05_019T04_9000004388_30522cztM0_level2_quad_clean.evt
Size (bytes)925,542,720178,099,200
Size882.7 MB 169.8 MB
Events in quadrant A5,266,5231,183,770
Events in quadrant B9,588,8811,146,117
Events in quadrant C5,568,7611,149,102
Events in quadrant D6,827,6521,118,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234652
B0371883
C0241582
D0280792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11529420.364299%
B115295254.553734%
C115291311.136265%
D115292822.446006%

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 12384 11531 1 1 0.01% 0.01%
B 12384 11531 292 292 2.36% 2.53%
C 12384 11531 9 9 0.07% 0.08%
D 12384 11531 185 185 1.49% 1.60%

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 8 192 26717 92.89 1357 1327 273.3
A 13 254 21357 73.28 1357 1327 273.3
A 3 137 13817 45.69 1357 1327 273.3
B 6 159 3270804 12988.21 1316 1281 251.7
B 6 36 975420 3869.78 1316 1281 251.7
B 0 229 51106 197.93 1316 1281 251.7
C 14 238 211237 685.12 1306 1315 306.4
C 10 22 178640 578.73 1306 1315 306.4
C 3 233 47696 151.37 1306 1315 306.4
D 8 195 825509 2527.4 1300 1269 326.1
D 13 249 424679 1298.32 1300 1269 326.1
D 12 218 259376 791.44 1300 1269 326.1

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