ASTROSAT CZTI

Data Quality Report

Orbit 10001

Creation date: 2024-06-27T15:53:30.609970
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/AS1G07_002T02_9000001432_10001cztM0_level2.evt modeM0/AS1G07_002T02_9000001432_10001cztM0_level2_quad_clean.evt
Size (bytes)775,673,280167,590,080
Size739.7 MB 159.8 MB
Events in quadrant A5,232,2051,102,318
Events in quadrant B5,068,9111,131,820
Events in quadrant C4,834,1941,117,998
Events in quadrant D7,678,5361,030,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02062

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022345333
B022028325
C021208218
D029921808

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10008940.939249%
B100041321.319472%
C10040840.836653%
D99567287.312174%

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 12790 10119 0 0 0.00% 0.00%
B 12790 10117 10 10 0.08% 0.10%
C 12790 10130 0 0 0.00% 0.00%
D 12790 10093 584 584 4.57% 5.79%

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 15 442285 1783.62 1237 1216 247.3
A 14 111 23010 88.13 1237 1216 247.3
A 0 226 11297 40.77 1237 1216 247.3
B 4 239 52780 220.74 1253 1226 233.6
B 0 219 36234 149.89 1253 1226 233.6
B 0 214 32467 133.76 1253 1226 233.6
C 13 61 9006 27.2 1239 1247 285.2
C 14 234 3670 8.5 1239 1247 285.2
C 8 222 3642 8.4 1239 1247 285.2
D 12 233 1395903 4917.67 1181 1154 283.6
D 1 52 873508 3075.78 1181 1154 283.6
D 8 195 854894 3010.15 1181 1154 283.6

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