ASTROSAT CZTI

Data Quality Report

Orbit 20001

Creation date: 2024-06-27T18:09:54.671325
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/AS1A06_002T02_9000002982_20001cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20001cztM0_level2_quad_clean.evt
Size (bytes)473,028,48073,990,080
Size451.1 MB 70.6 MB
Events in quadrant A3,303,706463,261
Events in quadrant B3,337,966467,252
Events in quadrant C3,358,995441,125
Events in quadrant D3,909,281441,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135711
B0136071
C0136311
D0154421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61281131.843995%
B6129911.484745%
C6129851.386849%
D61292814.584761%

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 7288 6129 43 43 0.59% 0.70%
B 7289 6130 15 15 0.21% 0.24%
C 7289 6130 4 4 0.05% 0.07%
D 7289 6130 154 154 2.11% 2.51%

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 14 238 143727 901.88 794 780 158.5
A 5 16 77207 482.19 794 780 158.5
A 14 254 16993 102.29 794 780 158.5
B 7 220 106401 707.89 783 765 149.2
B 0 245 52871 349.18 783 765 149.2
B 3 64 37564 246.6 783 765 149.2
C 3 233 149009 856.2 748 753 173.2
C 0 207 123682 709.93 748 753 173.2
C 14 238 118475 679.86 748 753 173.2
D 12 218 482781 2636.02 759 736 182.9
D 1 52 337171 1839.76 759 736 182.9
D 7 238 108882 591.39 759 736 182.9

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