ASTROSAT CZTI

Data Quality Report

Orbit 01027

Creation date: 2024-06-27T14:06:21.693865
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/AS1P01_998T02_9000000190_01027cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01027cztM0_level2_quad_clean.evt
Size (bytes)1,033,680,960112,245,120
Size985.8 MB 107.0 MB
Events in quadrant A7,476,077762,139
Events in quadrant B7,731,788765,346
Events in quadrant C8,939,121715,982
Events in quadrant D6,748,013724,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265671
B0273641
C0309701
D0244661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188460.743374%
B6189590.953304%
C61892634.249475%
D6189400.646308%

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 7388 6189 220 220 2.98% 3.55%
B 7389 6190 240 240 3.25% 3.88%
C 7389 6190 1098 1098 14.86% 17.74%
D 7389 6190 151 151 2.04% 2.44%

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 4 32 37904 77.55 1936 1945 463.7
A 11 242 8047 13.16 1936 1945 463.7
A 11 79 6848 10.57 1936 1945 463.7
B 5 249 74601 154.9 1985 1993 468.7
B 15 85 29222 58.09 1985 1993 468.7
B 15 22 28726 57.03 1985 1993 468.7
C 8 208 1596505 3216.58 1789 1848 495.8
C 15 241 291137 583.52 1789 1848 495.8
C 3 111 23917 44.52 1789 1848 495.8
D 5 80 33352 58.55 1769 1831 538.4
D 9 64 24013 41.2 1769 1831 538.4
D 9 49 23493 40.24 1769 1831 538.4

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