ASTROSAT CZTI

Data Quality Report

Orbit 20210113_A10_045T07_9000004110_level2

Creation date: 2021-01-15T15:05:52.968852
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/AS1A10_045T07_9000004110cztM0_level2_bc.evt modeM0/AS1A10_045T07_9000004110cztM0_level2_quad_clean.evt
Size (bytes)3,500,760,960993,712,320
Size3.3 GB 947.7 MB
Events in quadrant A18,135,3096,305,523
Events in quadrant B21,038,8086,360,106
Events in quadrant C16,784,9906,207,226
Events in quadrant D44,646,2655,770,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015680
B015680
C015680
D015680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01696180
B01812860
C01681510
D02699620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7973811411.430936%
B7973822412.810454%
C7973817842.237327%
D79738845710.605985%

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 93083 79743 16 16 0.02% 0.02%
B 93082 79738 50 50 0.05% 0.06%
C 93083 79741 0 0 0.00% 0.00%
D 93083 79740 1675 1675 1.80% 2.10%

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 15 174 751635 793.37 4433 4363 941.9
A 13 254 136031 139.79 4433 4363 941.9
A 15 47 73884 73.81 4433 4363 941.9
B 10 245 3362751 4138.48 4409 4312 811.5
B 10 246 366527 446.34 4409 4312 811.5
B 0 230 93208 109.54 4409 4312 811.5
C 14 254 92553 88.38 4286 4281 998.7
C 0 10 69744 65.55 4286 4281 998.7
C 7 247 60499 56.29 4286 4281 998.7
D 1 52 18680969 19932.92 4148 4026 937.0
D 8 195 6560281 6997.15 4148 4026 937.0
D 13 104 1383779 1472.54 4148 4026 937.0

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