ASTROSAT CZTI

Data Quality Report

Orbit 20200513_A07_027T12_9000003664_level2

Creation date: 2020-05-16T22:56:06.772520
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/AS1A07_027T12_9000003664cztM0_level2_bc.evt modeM0/AS1A07_027T12_9000003664cztM0_level2_quad_clean.evt
Size (bytes)374,261,760147,876,480
Size356.9 MB 141.0 MB
Events in quadrant A2,575,886939,613
Events in quadrant B2,628,900964,135
Events in quadrant C2,583,238908,042
Events in quadrant D2,767,725883,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242920
B0245160
C0246840
D0245040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113201100.971731%
B113201301.148410%
C113202011.775618%
D113201050.927562%

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 14950 11320 0 0 0.00% 0.00%
B 14950 11321 1 1 0.01% 0.01%
C 14950 11320 0 0 0.00% 0.00%
D 14950 11320 1 1 0.01% 0.01%

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 6 16 21983 148.85 663 651 143.3
A 13 254 15019 100.26 663 651 143.3
A 0 226 4231 24.98 663 651 143.3
B 4 173 23480 181.2 674 660 125.9
B 0 190 20212 155.25 674 660 125.9
B 3 209 5644 39.58 674 660 125.9
C 7 247 99912 656.94 640 637 151.1
C 2 16 14340 90.68 640 637 151.1
C 3 233 4706 26.93 640 637 151.1
D 8 195 130192 865.66 648 627 149.7
D 10 70 62139 410.98 648 627 149.7
D 2 234 47351 312.18 648 627 149.7

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