ASTROSAT CZTI

Data Quality Report

Orbit 31087

Creation date: 2024-06-27T20:23:12.049954
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/AS1A10_109T01_9000004492_31087cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31087cztM0_level2_quad_clean.evt
Size (bytes)539,061,12071,804,160
Size514.1 MB 68.5 MB
Events in quadrant A3,303,282437,604
Events in quadrant B5,176,956434,487
Events in quadrant C3,572,386418,329
Events in quadrant D3,814,416412,091

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138491
B0203621
C0145221
D0153981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6763500.739317%
B6764981.448847%
C67631121.656070%
D6763390.576667%

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 7653 6764 0 0 0.00% 0.00%
B 7654 6765 0 0 0.00% 0.00%
C 7653 6764 2 2 0.03% 0.03%
D 7653 6764 3 3 0.04% 0.04%

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 13 254 12012 65.46 855 839 170.7
A 3 137 8727 46.21 855 839 170.7
A 0 226 7088 36.61 855 839 170.7
B 6 159 1819430 11205.35 838 817 162.3
B 12 111 20674 122.35 838 817 162.3
B 0 230 19697 116.33 838 817 162.3
C 0 10 197160 1030.27 808 815 190.6
C 14 238 129496 675.22 808 815 190.6
C 10 22 63088 326.76 808 815 190.6
D 8 195 496728 2535.72 820 799 195.6
D 13 174 195519 995.62 820 799 195.6
D 2 234 29502 146.76 820 799 195.6

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