ASTROSAT CZTI

Data Quality Report

Orbit 17747

Creation date: 2024-06-27T17:40:25.000019
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/AS1T03_070T05_9000002640_17747cztM0_level2.evt modeM0/AS1T03_070T05_9000002640_17747cztM0_level2_quad_clean.evt
Size (bytes)449,444,16077,241,600
Size428.6 MB 73.7 MB
Events in quadrant A3,213,987477,187
Events in quadrant B3,496,727486,869
Events in quadrant C3,322,870459,142
Events in quadrant D3,126,529452,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137801
B0145741
C0138901
D0139191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6636660.994575%
B66361301.959011%
C6636811.220615%
D6635200.301432%

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 9211 6638 0 0 0.00% 0.00%
B 9211 6638 10 10 0.11% 0.15%
C 9211 6638 0 0 0.00% 0.00%
D 9210 6637 1 1 0.01% 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 12009 66.81 831 814 167.6
A 0 226 7303 38.72 831 814 167.6
A 12 194 6034 31.15 831 814 167.6
B 7 220 81370 515.16 836 818 156.4
B 0 189 71661 453.07 836 818 156.4
B 0 219 23732 146.54 836 818 156.4
C 14 238 125324 668.96 801 808 186.1
C 5 218 41231 217.17 801 808 186.1
C 5 219 15408 78.44 801 808 186.1
D 2 234 28556 130.75 796 784 212.4
D 1 52 27013 123.49 796 784 212.4
D 7 238 14404 64.12 796 784 212.4

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