ASTROSAT CZTI

Data Quality Report

Orbit 08851

Creation date: 2024-06-27T15:38:03.534067
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/AS1A03_036T01_9000001230_08851cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08851cztM0_level2_quad_clean.evt
Size (bytes)689,129,280113,904,000
Size657.2 MB 108.6 MB
Events in quadrant A6,090,953688,452
Events in quadrant B4,896,021713,343
Events in quadrant C4,212,089702,654
Events in quadrant D5,015,600674,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02044
B02044
C02042
D02042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025351803
B021597574
C020230603
D022168575

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96392752.852993%
B96771801.860081%
C9647710.735980%
D9681920.950315%

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 10727 9837 98 98 0.91% 1.00%
B 10727 9862 21 21 0.20% 0.21%
C 10727 9848 0 0 0.00% 0.00%
D 10727 9863 18 18 0.17% 0.18%

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 1562737 7019.07 1098 1073 222.5
A 15 236 119542 532.47 1098 1073 222.5
A 15 174 78232 346.8 1098 1073 222.5
B 4 48 183994 857.04 1115 1087 213.4
B 10 252 87430 404.58 1115 1087 213.4
B 0 214 79260 366.29 1115 1087 213.4
C 13 61 8309 28.92 1077 1080 250.0
C 12 4 3914 11.34 1077 1080 250.0
C 14 67 3180 8.4 1077 1080 250.0
D 2 152 311803 1187.52 1079 1047 261.7
D 8 195 173791 660.12 1079 1047 261.7
D 11 129 129280 490.03 1079 1047 261.7

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