ASTROSAT CZTI

Data Quality Report

Orbit 23396

Creation date: 2024-06-27T18:53:49.198760
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_127T02_9000003460_23396cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23396cztM0_level2_quad_clean.evt
Size (bytes)590,472,000101,759,040
Size563.1 MB 97.0 MB
Events in quadrant A3,589,888658,842
Events in quadrant B3,891,250654,658
Events in quadrant C3,801,799635,134
Events in quadrant D6,077,819597,932

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157492
B0165272
C0160972
D0232412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7689881.144492%
B76901912.483745%
C76901441.872562%
D769090611.781534%

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 7864 7691 0 0 0.00% 0.00%
B 7865 7691 49 49 0.62% 0.64%
C 7865 7692 2 2 0.03% 0.03%
D 7865 7692 812 812 10.32% 10.56%

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 12154 59.28 930 907 189.7
A 3 137 8254 38.73 930 907 189.7
A 0 226 8098 37.9 930 907 189.7
B 0 189 126227 709.01 919 896 176.8
B 5 172 115894 650.55 919 896 176.8
B 12 111 21377 115.86 919 896 176.8
C 10 9 138427 657.07 893 897 209.3
C 14 238 138337 656.64 893 897 209.3
C 0 207 13617 60.77 893 897 209.3
D 1 52 2729186 12832.38 868 844 212.6
D 2 234 33943 155.68 868 844 212.6
D 2 120 28276 129.02 868 844 212.6

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