ASTROSAT CZTI

Data Quality Report

Orbit 18425

Creation date: 2024-06-27T17:49:39.885363
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_199T01_9000002732_18425cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18425cztM0_level2_quad_clean.evt
Size (bytes)447,531,840101,940,480
Size426.8 MB 97.2 MB
Events in quadrant A3,021,823665,061
Events in quadrant B3,137,256694,280
Events in quadrant C3,211,621668,879
Events in quadrant D3,768,186632,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128782
B0132112
C0134422
D0151712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104110.180210%
B6104360.589777%
C6104891.458060%
D61041272.080603%

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 7429 6105 0 0 0.00% 0.00%
B 7429 6105 0 0 0.00% 0.00%
C 7429 6105 5 5 0.07% 0.08%
D 7429 6105 64 64 0.86% 1.05%

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 24149 150.5 776 762 155.4
A 3 254 8768 51.52 776 762 155.4
A 4 2 7104 40.81 776 762 155.4
B 0 189 21037 137.54 790 773 147.3
B 12 111 16682 107.98 790 773 147.3
B 11 111 14434 92.72 790 773 147.3
C 14 238 121450 684.02 762 768 176.4
C 9 54 71011 398.13 762 768 176.4
C 3 233 50723 283.14 762 768 176.4
D 12 110 296937 1651.49 750 728 179.4
D 1 52 221798 1232.56 750 728 179.4
D 8 230 130891 725.71 750 728 179.4

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