ASTROSAT CZTI

Data Quality Report

Orbit 25730

Creation date: 2024-06-27T19:20:51.875530
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/AS1A09_008T06_9000003748_25730cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25730cztM0_level2_quad_clean.evt
Size (bytes)1,615,089,600206,115,840
Size1.5 GB 196.6 MB
Events in quadrant A8,710,2181,335,805
Events in quadrant B8,833,4741,364,326
Events in quadrant C8,648,0031,305,961
Events in quadrant D21,502,865990,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372270
B0372480
C0368750
D0759100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180571821.007919%
B180582241.240447%
C180582431.345664%
D18058507228.087274%

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 19897 18058 1 1 0.01% 0.01%
B 19898 18059 19 19 0.10% 0.11%
C 19898 18059 0 0 0.00% 0.00%
D 19898 18059 4194 4194 21.08% 23.22%

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 6 16 203129 456.12 2194 2144 440.6
A 3 243 38539 82.6 2194 2144 440.6
A 13 254 28193 59.12 2194 2144 440.6
B 0 245 63902 148.53 2184 2128 415.9
B 5 172 56150 129.89 2184 2128 415.9
B 12 111 52151 120.28 2184 2128 415.9
C 14 238 337700 683.77 2095 2105 490.8
C 3 233 133616 267.95 2095 2105 490.8
C 1 16 20124 36.71 2095 2105 490.8
D 1 52 12204809 29060.99 1721 1669 419.9
D 7 80 1427591 3395.74 1721 1669 419.9
D 8 195 768107 1825.22 1721 1669 419.9

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