ASTROSAT CZTI

Data Quality Report

Orbit 21260

Creation date: 2024-06-27T18:25:33.297905
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/AS1A05_037T01_9000003140_21260cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21260cztM0_level2_quad_clean.evt
Size (bytes)560,139,84088,188,480
Size534.2 MB 84.1 MB
Events in quadrant A4,244,621563,210
Events in quadrant B3,449,411581,971
Events in quadrant C3,298,510562,686
Events in quadrant D5,530,717509,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169332
B0143482
C0139292
D0205852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65002073.184615%
B6500851.307692%
C6499991.523311%
D649982012.617326%

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 7605 6500 102 102 1.34% 1.57%
B 7605 6500 10 10 0.13% 0.15%
C 7604 6499 0 0 0.00% 0.00%
D 7603 6498 639 639 8.40% 9.83%

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 16 941271 5508.63 849 832 170.7
A 12 96 15773 87.52 849 832 170.7
A 13 254 10407 56.09 849 832 170.7
B 0 197 61620 380.97 844 825 159.6
B 3 64 36436 223.16 844 825 159.6
B 0 245 32321 197.37 844 825 159.6
C 14 238 130059 686.94 808 815 188.1
C 0 207 11674 57.72 808 815 188.1
C 13 61 5647 25.68 808 815 188.1
D 13 174 1698080 8882.73 785 763 191.1
D 1 52 275401 1437.29 785 763 191.1
D 12 235 185705 967.87 785 763 191.1

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