ASTROSAT CZTI

Data Quality Report

Orbit 20200910_A07_027T01_9000003862_level2

Creation date: 2021-01-08T11:59:01.070594
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_027T01_9000003862cztM0_level2_bc.evt modeM0/AS1A07_027T01_9000003862cztM0_level2_quad_clean.evt
Size (bytes)1,917,964,800355,622,400
Size1.8 GB 339.1 MB
Events in quadrant A9,765,0852,310,101
Events in quadrant B18,467,4792,209,032
Events in quadrant C7,323,9242,310,091
Events in quadrant D20,716,8522,107,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0695940
B0968260
C0618010
D01119030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A266363021.133804%
B26636591822.218051%
C266367682.883316%
D26636482318.107073%

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 32906 26637 3 3 0.01% 0.01%
B 32906 26635 3115 3115 9.47% 11.70%
C 32906 26637 50 50 0.15% 0.19%
D 32906 26636 877 877 2.67% 3.29%

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 0 13 3493242 10191.94 1621 1599 342.6
A 13 254 41590 116.73 1621 1599 342.6
A 12 96 21849 59.11 1621 1599 342.6
B 0 189 12603254 46000.49 1497 1472 273.9
B 0 190 71222 254.61 1497 1472 273.9
B 15 32 43246 152.49 1497 1472 273.9
C 2 16 946632 2541.48 1599 1601 371.8
C 15 208 171924 458.05 1599 1601 371.8
C 10 22 32579 83.31 1599 1601 371.8
D 7 80 11002960 32191.65 1512 1480 341.7
D 1 52 2347822 6865.68 1512 1480 341.7
D 15 21 631646 1843.94 1512 1480 341.7

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