ASTROSAT CZTI

Data Quality Report

Orbit 30557

Creation date: 2024-06-27T20:16:55.629747
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_055T01_9000004400_30557cztM0_level2.evt modeM0/AS1A10_055T01_9000004400_30557cztM0_level2_quad_clean.evt
Size (bytes)607,726,080115,908,480
Size579.6 MB 110.5 MB
Events in quadrant A3,567,771799,336
Events in quadrant B5,436,819789,735
Events in quadrant C3,894,797750,707
Events in quadrant D5,081,074732,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146963
B0204092
C0156752
D0197242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821231.957975%
B62822544.043298%
C62823315.269023%
D62822644.202483%

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 7602 6283 0 0 0.00% 0.00%
B 7602 6283 17 17 0.22% 0.27%
C 7602 6283 91 91 1.20% 1.45%
D 7602 6283 209 209 2.75% 3.33%

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 8 192 22777 121.4 920 907 180.1
A 13 254 10889 55.41 920 907 180.1
A 3 137 8252 40.77 920 907 180.1
B 6 159 1692080 10197.75 893 875 165.8
B 6 36 135088 809.29 893 875 165.8
B 3 112 44747 264.54 893 875 165.8
C 0 10 320131 1656.43 845 854 192.8
C 14 238 139335 718.45 845 854 192.8
C 3 233 116232 598.59 845 854 192.8
D 12 227 1417849 6926.81 881 861 204.6
D 8 195 138340 672.05 881 861 204.6
D 1 52 93289 451.83 881 861 204.6

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