ASTROSAT CZTI

Data Quality Report

Orbit 34479

Creation date: 2022-02-12T18:42:03.532444
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_071T14_9000004924_34479cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34479cztM0_level2_quad_clean.evt
Size (bytes)175,158,72021,378,240
Size167.0 MB 20.4 MB
Events in quadrant A1,096,543129,536
Events in quadrant B1,571,054129,781
Events in quadrant C1,117,034129,180
Events in quadrant D1,394,013124,846

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045352
B058881
C045481
D055061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1825110.602740%
B182523913.095890%
C1825170.931507%
D1825884.821918%

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 3857 1826 0 0 0.00% 0.00%
B 3857 1826 153 153 3.97% 8.38%
C 3857 1826 8 8 0.21% 0.44%
D 3857 1826 77 77 2.00% 4.22%

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 15 169 98112 1910.2 252 247 51.2
A 10 83 18218 350.77 252 247 51.2
A 13 254 4284 78.8 252 247 51.2
B 5 172 614416 13387.03 235 229 45.9
B 0 190 14801 317.62 235 229 45.9
B 0 189 10319 219.93 235 229 45.9
C 15 214 81010 1405.53 245 247 57.5
C 0 10 51266 887.89 245 247 57.5
C 3 233 11945 203.58 245 247 57.5
D 8 195 176204 2988.34 238 231 58.9
D 12 79 112959 1914.33 238 231 58.9
D 13 174 78879 1335.59 238 231 58.9

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