ASTROSAT CZTI

Data Quality Report

Orbit 24120

Creation date: 2024-06-27T19:02:39.935798
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_134T02_9000003568_24120cztM0_level2.evt modeM0/AS1A07_134T02_9000003568_24120cztM0_level2_quad_clean.evt
Size (bytes)557,481,60096,517,440
Size531.7 MB 92.0 MB
Events in quadrant A3,485,815621,168
Events in quadrant B3,616,065627,410
Events in quadrant C3,614,571600,564
Events in quadrant D5,682,917576,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149841
B0152241
C0153201
D0217603

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71341161.626016%
B71351482.074282%
C71351582.214436%
D71342693.770676%

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 7364 7135 0 0 0.00% 0.00%
B 7365 7136 6 6 0.08% 0.08%
C 7365 7136 20 20 0.27% 0.28%
D 7364 7135 189 189 2.57% 2.65%

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 3 1 70988 389.0 883 865 180.3
A 13 254 11297 57.87 883 865 180.3
A 2 250 8507 42.39 883 865 180.3
B 0 189 52276 301.54 876 853 170.5
B 5 250 28538 162.34 876 853 170.5
B 4 187 20879 117.43 876 853 170.5
C 14 238 129581 651.6 840 843 197.6
C 10 9 120489 605.58 840 843 197.6
C 7 247 55356 275.91 840 843 197.6
D 8 195 994863 4749.71 851 826 209.3
D 1 52 896519 4279.81 851 826 209.3
D 12 218 254884 1213.94 851 826 209.3

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