ASTROSAT CZTI

Data Quality Report

Orbit 20171006_G08_037T01_9000001588_level2

Creation date: 2017-10-18T19:38:33.973844
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G08_037T01_9000001588cztM0_level2.evt modeM0/AS1G08_037T01_9000001588cztM0_level2_quad_clean.evt
Size (bytes)3,961,310,400520,323,840
Size3.7 GB 496.2 MB
Events in quadrant A35,580,9283,171,573
Events in quadrant B29,611,0973,272,253
Events in quadrant C20,361,9463,285,022
Events in quadrant D31,379,5462,932,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09200
C09200
D09220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01363430
B01174700
C0923180
D01239580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4508927146.019206%
B4514222925.077312%
C451981820.402673%
D4490033867.541203%

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 50294 45517 1532 1532 3.05% 3.37%
B 50294 45530 1185 1185 2.36% 2.60%
C 50294 45542 3 3 0.01% 0.01%
D 50294 45321 2440 2440 4.85% 5.38%

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 5 9493928 8892.93 5266 5153 1067.0
A 8 15 4189948 3922.01 5266 5153 1067.0
A 14 238 892078 831.23 5266 5153 1067.0
B 4 239 7751022 7657.98 5324 5195 1011.5
B 0 214 260647 252.55 5324 5195 1011.5
B 0 219 189378 182.09 5324 5195 1011.5
C 13 61 38948 28.0 5205 5224 1204.4
C 8 222 23072 14.82 5205 5224 1204.4
C 8 128 23001 14.76 5205 5224 1204.4
D 1 52 5798587 4823.67 4974 4832 1201.1
D 13 152 2978045 2475.39 4974 4832 1201.1
D 10 253 1113399 922.95 4974 4832 1201.1

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