ASTROSAT CZTI

Data Quality Report

Orbit 16505

Creation date: 2024-06-27T17:23:41.689118
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_174T01_9000002440_16505cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16505cztM0_level2_quad_clean.evt
Size (bytes)574,076,160104,071,680
Size547.5 MB 99.3 MB
Events in quadrant A4,159,960642,722
Events in quadrant B4,413,644653,400
Events in quadrant C4,259,015629,112
Events in quadrant D3,963,174622,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182003
B0187312
C0182512
D0182122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86872002.302291%
B86872653.050535%
C86872963.407390%
D86871721.979970%

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 9458 8689 0 0 0.00% 0.00%
B 9458 8688 14 14 0.15% 0.16%
C 9458 8689 0 0 0.00% 0.00%
D 9458 8689 2 2 0.02% 0.02%

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 15 174 48797 221.59 1061 1035 215.5
A 15 223 21162 93.38 1061 1035 215.5
A 13 210 11908 50.44 1061 1035 215.5
B 10 16 65902 310.94 1063 1033 208.6
B 15 35 63701 300.39 1063 1033 208.6
B 4 173 52242 245.46 1063 1033 208.6
C 14 238 154742 633.65 1024 1032 242.6
C 3 233 80426 327.29 1024 1032 242.6
C 7 247 29480 117.27 1024 1032 242.6
D 2 234 30266 114.65 1037 1005 255.2
D 10 70 17372 64.13 1037 1005 255.2
D 5 222 12468 44.91 1037 1005 255.2

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