ASTROSAT CZTI

Data Quality Report

Orbit 17445

Creation date: 2024-06-27T17:36:38.982125
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_068T01_9000002580_17445cztM0_level2.evt modeM0/AS1A05_068T01_9000002580_17445cztM0_level2_quad_clean.evt
Size (bytes)502,248,96088,404,480
Size479.0 MB 84.3 MB
Events in quadrant A3,421,842557,269
Events in quadrant B3,561,986556,908
Events in quadrant C3,625,858533,812
Events in quadrant D4,115,838531,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147903
B0151333
C0151493
D0170483

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7137430.602494%
B71371171.639344%
C71371211.695390%
D71371211.695390%

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 7617 7139 0 0 0.00% 0.00%
B 7617 7139 3 3 0.04% 0.04%
C 7617 7139 0 0 0.00% 0.00%
D 7617 7139 60 60 0.79% 0.84%

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 0 226 7766 38.08 888 871 181.1
A 12 194 6579 31.53 888 871 181.1
A 3 137 6473 30.94 888 871 181.1
B 7 220 26861 153.47 882 861 169.4
B 0 197 26251 149.87 882 861 169.4
B 12 111 20001 112.98 882 861 169.4
C 14 238 131050 655.95 847 854 198.5
C 5 218 87910 438.61 847 854 198.5
C 3 233 77856 387.95 847 854 198.5
D 13 232 371452 1766.78 860 835 209.8
D 13 189 327948 1559.39 860 835 209.8
D 2 234 31049 144.03 860 835 209.8

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