ASTROSAT CZTI

Data Quality Report

Orbit 27809

Creation date: 2024-06-27T19:44:41.419509
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_016T02_9000004018_27809cztM0_level2.evt modeM0/AS1A10_016T02_9000004018_27809cztM0_level2_quad_clean.evt
Size (bytes)452,615,04095,379,840
Size431.6 MB 91.0 MB
Events in quadrant A3,246,459628,280
Events in quadrant B3,494,174630,292
Events in quadrant C3,300,142572,527
Events in quadrant D3,209,085588,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138830
B0145070
C0140100
D0141330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6726480.713649%
B6727951.412219%
C6727851.263565%
D6727470.698677%

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 7517 6726 0 0 0.00% 0.00%
B 7518 6728 18 18 0.24% 0.27%
C 7518 6727 2 2 0.03% 0.03%
D 7518 6728 19 19 0.25% 0.28%

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 13 254 10507 56.71 842 825 170.7
A 3 137 8071 42.44 842 825 170.7
A 0 226 6889 35.52 842 825 170.7
B 10 245 189653 1171.17 832 812 161.2
B 0 190 23569 141.14 832 812 161.2
B 12 111 20041 119.26 832 812 161.2
C 14 238 126392 674.76 792 800 186.1
C 3 233 57182 302.92 792 800 186.1
C 10 22 19179 98.74 792 800 186.1
D 1 52 160904 824.99 808 786 194.1
D 2 234 25216 125.87 808 786 194.1
D 14 226 7756 35.91 808 786 194.1

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