ASTROSAT CZTI

Data Quality Report

Orbit 28249

Creation date: 2024-06-27T19:49:38.179164
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_067T01_9000004076_28249cztM0_level2.evt modeM0/AS1A10_067T01_9000004076_28249cztM0_level2_quad_clean.evt
Size (bytes)1,411,292,160230,284,800
Size1.3 GB 219.6 MB
Events in quadrant A8,833,2141,465,207
Events in quadrant B9,266,7131,454,401
Events in quadrant C9,549,6911,393,693
Events in quadrant D13,832,5491,377,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382740
B0395630
C0401360
D0537940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186262121.138194%
B186262831.519382%
C186264192.249544%
D1862613707.355310%

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 21021 18628 0 0 0.00% 0.00%
B 21021 18627 19 19 0.09% 0.10%
C 21021 18627 11 11 0.05% 0.06%
D 21021 18627 930 930 4.42% 4.99%

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 30683 62.05 2284 2235 458.5
A 3 137 23263 45.87 2284 2235 458.5
A 0 226 19100 36.79 2284 2235 458.5
B 10 245 244698 559.52 2248 2186 433.4
B 4 200 87381 196.56 2248 2186 433.4
B 12 111 55227 122.37 2248 2186 433.4
C 3 233 685900 1337.65 2175 2193 511.1
C 14 238 347237 675.07 2175 2193 511.1
C 2 16 35776 65.7 2175 2193 511.1
D 1 52 3586191 6962.69 2153 2094 514.8
D 2 250 743165 1439.65 2153 2094 514.8
D 5 222 486470 940.98 2153 2094 514.8

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