ASTROSAT CZTI

Data Quality Report

Orbit 31955

Creation date: 2024-06-27T20:34:31.164839
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/AS1C06_002T04_9000004660_31955cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31955cztM0_level2_quad_clean.evt
Size (bytes)906,877,440127,563,840
Size864.9 MB 121.7 MB
Events in quadrant A4,305,756862,221
Events in quadrant B8,317,272796,037
Events in quadrant C6,906,695777,435
Events in quadrant D7,302,450776,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020614
B020822
C020818
D020515

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208551726
B0351923145
C0295152623
D0309772663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9422190.201656%
B93215986.415621%
C93445676.068065%
D93956506.918574%

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 17234 9563 5 5 0.03% 0.05%
B 17229 9475 402 402 2.33% 4.24%
C 17226 9501 101 101 0.59% 1.06%
D 17228 9542 589 589 3.42% 6.17%

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 12 96 29219 127.46 1097 1073 220.8
A 13 6 24965 108.2 1097 1073 220.8
A 13 254 18799 80.27 1097 1073 220.8
B 6 159 2649610 13365.6 1044 1018 198.2
B 12 18 507570 2556.21 1044 1018 198.2
B 5 172 506216 2549.38 1044 1018 198.2
C 3 233 2324289 9657.13 1025 1030 240.6
C 0 10 325500 1348.73 1025 1030 240.6
C 14 238 185555 767.02 1025 1030 240.6
D 13 249 1152405 4664.19 1035 1009 246.9
D 8 195 813028 3289.4 1035 1009 246.9
D 12 33 490442 1982.64 1035 1009 246.9

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