ASTROSAT CZTI

Data Quality Report

Orbit 20161219_A02_189T01_9000000902_level2

Creation date: 2017-09-22T13:32:17.163048
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/AS1A02_189T01_9000000902cztM0_level2.evt modeM0/AS1A02_189T01_9000000902cztM0_level2_quad_clean.evt
Size (bytes)2,929,518,720561,150,720
Size2.7 GB 535.2 MB
Events in quadrant A20,395,2983,648,426
Events in quadrant B20,019,4993,699,744
Events in quadrant C16,407,4303,689,739
Events in quadrant D29,365,2043,378,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07680
B07680
C07620
D07640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0854980
B0859520
C0770200
D01140030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375756981.857618%
B3757312633.361456%
C375882560.681068%
D3752329447.845855%

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 44123 37707 171 171 0.39% 0.45%
B 44123 37694 662 662 1.50% 1.76%
C 44123 37720 28 28 0.06% 0.07%
D 44123 37654 2085 2085 4.73% 5.54%

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 2160809 2542.84 4263 4174 848.1
A 15 239 1663320 1956.27 4263 4174 848.1
A 13 248 55823 60.9 4263 4174 848.1
B 0 228 2625985 3306.44 4291 4192 792.9
B 4 170 155721 191.1 4291 4192 792.9
B 0 214 135298 165.34 4291 4192 792.9
C 9 247 157197 162.63 4149 4163 941.0
C 13 61 33368 31.04 4149 4163 941.0
C 8 128 21125 18.02 4149 4163 941.0
D 2 33 7129015 7377.26 3993 3868 965.8
D 2 152 2648845 2738.57 3993 3868 965.8
D 8 195 2287809 2364.76 3993 3868 965.8

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