ASTROSAT CZTI

Data Quality Report

Orbit 35838

Creation date: 2022-05-31T11:01:15.877275
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/AS1A11_080T01_9000005146_35838cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35838cztM0_level2_quad_clean.evt
Size (bytes)153,558,72028,313,280
Size146.4 MB 27.0 MB
Events in quadrant A1,042,044180,470
Events in quadrant B960,347187,185
Events in quadrant C1,080,388179,663
Events in quadrant D1,430,423165,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07034
B07030
C07030
D07127

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096415346
B072633113
C075413140
D097794258

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195970.357325%
B201340.198708%
C1990241.206030%
D1938954.901961%

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 3386 2166 0 0 0.00% 0.00%
B 3415 2229 3 3 0.09% 0.13%
C 3406 2225 24 24 0.70% 1.08%
D 3387 2168 103 103 3.04% 4.75%

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 15 169 84804 1767.57 229 226 47.8
A 10 83 66406 1383.07 229 226 47.8
A 13 254 2393 45.29 229 226 47.8
B 5 172 45248 951.28 231 226 47.3
B 12 111 5230 105.73 231 226 47.3
B 0 214 5033 101.57 231 226 47.3
C 15 214 84931 1621.21 219 221 52.3
C 0 10 83654 1596.77 219 221 52.3
C 15 208 56313 1073.51 219 221 52.3
D 7 223 388053 7319.57 212 208 53.0
D 2 153 97243 1831.28 212 208 53.0
D 2 250 47935 900.72 212 208 53.0

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