ASTROSAT CZTI

Data Quality Report

Orbit 20190909_A05_041T01_9000003150_level2

Creation date: 2019-09-12T14:32:30.964752
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/AS1A05_041T01_9000003150cztM0_level2_bc.evt modeM0/AS1A05_041T01_9000003150cztM0_level2_quad_clean.evt
Size (bytes)3,138,750,720969,707,520
Size2.9 GB 924.8 MB
Events in quadrant A17,073,7766,233,178
Events in quadrant B16,839,2576,306,578
Events in quadrant C22,071,2476,010,229
Events in quadrant D34,003,2425,715,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015180
B015140
C015120
D015120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01586130
B01598620
C01801290
D02282500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744758171.097012%
B7447011771.580502%
C7445522933.079713%
D7441566938.994154%

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 87418 74819 0 0 0.00% 0.00%
B 87418 74804 30 30 0.03% 0.04%
C 87418 74808 63 63 0.07% 0.08%
D 87418 74777 383 383 0.44% 0.51%

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 5 168 861351 979.29 4080 4007 875.5
A 9 143 347110 391.91 4080 4007 875.5
A 11 47 96417 105.55 4080 4007 875.5
B 3 64 400202 518.77 4091 3991 763.7
B 0 230 367727 476.25 4091 3991 763.7
B 0 197 320681 414.65 4091 3991 763.7
C 3 233 6811274 7501.72 3899 3880 907.4
C 10 23 162752 175.08 3899 3880 907.4
C 10 91 94525 99.89 3899 3880 907.4
D 13 174 8753633 9854.54 3906 3777 887.9
D 12 235 3845703 4326.98 3906 3777 887.9
D 1 52 2957845 3327.03 3906 3777 887.9

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