ASTROSAT CZTI

Data Quality Report

Orbit 24131

Creation date: 2024-06-27T19:02:28.112138
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/AS1A07_069T01_9000003570_24131cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24131cztM0_level2_quad_clean.evt
Size (bytes)494,743,68091,416,960
Size471.8 MB 87.2 MB
Events in quadrant A3,629,796593,033
Events in quadrant B3,632,489600,847
Events in quadrant C3,619,344557,695
Events in quadrant D3,651,027554,174

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146142
B0145952
C0146092
D0146272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66382153.238927%
B66382173.269057%
C66382593.901778%
D66381612.425429%

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 9023 6638 0 0 0.00% 0.00%
B 9023 6638 2 2 0.02% 0.03%
C 9023 6639 6 6 0.07% 0.09%
D 9023 6640 13 13 0.14% 0.20%

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 34470 181.51 928 911 184.9
A 4 2 13596 68.61 928 911 184.9
A 13 254 11035 54.76 928 911 184.9
B 0 245 24402 135.45 916 893 173.6
B 12 111 20787 114.62 916 893 173.6
B 11 111 18202 99.73 916 893 173.6
C 14 238 138266 676.72 867 876 203.0
C 2 16 55738 270.22 867 876 203.0
C 7 247 28218 134.67 867 876 203.0
D 8 195 131689 601.05 893 870 217.6
D 12 218 41069 184.7 893 870 217.6
D 7 238 37899 170.13 893 870 217.6

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