ASTROSAT CZTI

Data Quality Report

Orbit 16659

Creation date: 2024-06-27T17:25:47.471649
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_078T01_9000002462_16659cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16659cztM0_level2_quad_clean.evt
Size (bytes)472,138,560127,886,400
Size450.3 MB 122.0 MB
Events in quadrant A3,121,723888,017
Events in quadrant B3,478,138901,384
Events in quadrant C3,053,016846,704
Events in quadrant D4,241,312820,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131992
B0142941
C0128801
D0166951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961921.543365%
B5961931.560141%
C5961811.358832%
D59611322.214394%

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 7287 5963 22 22 0.30% 0.37%
B 7287 5963 10 10 0.14% 0.17%
C 7287 5963 0 0 0.00% 0.00%
D 7287 5963 57 57 0.78% 0.96%

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 161358 1042.06 768 754 154.1
A 9 143 7236 42.06 768 754 154.1
A 0 226 7009 40.59 768 754 154.1
B 15 35 135875 963.09 767 750 140.3
B 0 189 124706 883.49 767 750 140.3
B 0 198 42772 299.51 767 750 140.3
C 14 238 114708 685.88 719 725 166.2
C 7 247 68900 410.23 719 725 166.2
C 3 233 64635 384.57 719 725 166.2
D 1 52 1223375 6933.3 729 709 176.3
D 10 70 145893 823.29 729 709 176.3
D 8 195 26836 148.16 729 709 176.3

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