ASTROSAT CZTI

Data Quality Report

Orbit 29500

Creation date: 2024-06-27T20:04:58.094751
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_094T06_9000004248_29500cztM0_level2.evt modeM0/AS1A10_094T06_9000004248_29500cztM0_level2_quad_clean.evt
Size (bytes)758,992,32096,471,360
Size723.8 MB 92.0 MB
Events in quadrant A3,297,772653,341
Events in quadrant B3,667,629671,502
Events in quadrant C3,968,968643,647
Events in quadrant D11,635,806521,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133291
B0146871
C0160712
D0387921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172270.437459%
B6173831.344565%
C61722063.337654%
D6172240338.933895%

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 7567 6173 0 0 0.00% 0.00%
B 7568 6174 19 19 0.25% 0.31%
C 7567 6173 22 22 0.29% 0.36%
D 7567 6172 2604 2604 34.41% 42.19%

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 12050 66.94 849 837 167.5
A 0 13 9263 50.3 849 837 167.5
A 12 96 8361 44.92 849 837 167.5
B 5 255 147819 958.04 850 831 153.4
B 0 190 117124 757.97 850 831 153.4
B 5 172 22668 142.33 850 831 153.4
C 7 247 272591 1448.0 829 836 187.7
C 3 233 231038 1226.59 829 836 187.7
C 14 238 173296 918.92 829 836 187.7
D 8 195 7330911 41820.1 753 737 175.3
D 7 238 429813 2447.96 753 737 175.3
D 12 33 421241 2399.06 753 737 175.3

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