ASTROSAT CZTI

Data Quality Report

Orbit 29219

Creation date: 2024-06-27T20:01:39.375456
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/AS1A10_102T02_9000004200_29219cztM0_level2.evt modeM0/AS1A10_102T02_9000004200_29219cztM0_level2_quad_clean.evt
Size (bytes)1,502,700,480284,109,120
Size1.4 GB 270.9 MB
Events in quadrant A8,916,1121,855,980
Events in quadrant B10,223,3691,884,340
Events in quadrant C9,249,9441,830,306
Events in quadrant D15,831,1221,718,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393054
B0430184
C0398174
D0605355

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190871170.612983%
B190884242.221291%
C190883041.592624%
D1908715738.241211%

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 21262 19091 0 0 0.00% 0.00%
B 21263 19092 114 114 0.54% 0.60%
C 21263 19092 0 0 0.00% 0.00%
D 21262 19091 1029 1029 4.84% 5.39%

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 13 90123 192.48 2277 2220 456.7
A 13 254 37894 78.12 2277 2220 456.7
A 1 113 30071 60.99 2277 2220 456.7
B 0 229 553072 1289.29 2253 2193 427.3
B 10 245 362163 842.48 2253 2193 427.3
B 10 246 322669 750.05 2253 2193 427.3
C 14 238 353659 689.02 2191 2200 510.1
C 3 233 321110 625.21 2191 2200 510.1
C 2 114 44983 83.87 2191 2200 510.1
D 1 52 4905371 9828.42 2119 2060 498.9
D 8 195 2268880 4543.72 2119 2060 498.9
D 2 250 155178 306.92 2119 2060 498.9

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