ASTROSAT CZTI

Data Quality Report

Orbit 29712

Creation date: 2024-06-27T20:07:03.753161
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_007T01_9000004276_29712cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29712cztM0_level2_quad_clean.evt
Size (bytes)2,192,731,200283,682,880
Size2.0 GB 270.5 MB
Events in quadrant A11,322,5811,761,255
Events in quadrant B18,973,3831,775,389
Events in quadrant C13,483,3911,750,593
Events in quadrant D21,011,1841,649,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0492465
B0737485
C0550965
D0789975

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240463151.309989%
B240456102.536910%
C240456272.607611%
D2404617387.227813%

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 27116 24047 0 0 0.00% 0.00%
B 27115 24046 58 58 0.21% 0.24%
C 27115 24045 114 114 0.42% 0.47%
D 27116 24046 1433 1433 5.28% 5.96%

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 46258 73.28 2934 2862 592.2
A 3 137 29718 45.35 2934 2862 592.2
A 0 226 24334 36.26 2934 2862 592.2
B 6 159 6894186 12381.62 2893 2814 556.6
B 0 229 520542 930.19 2893 2814 556.6
B 0 190 95085 165.78 2893 2814 556.6
C 3 233 1031503 1550.31 2836 2858 663.5
C 10 22 627823 941.91 2836 2858 663.5
C 14 238 453588 679.31 2836 2858 663.5
D 7 80 6010094 9075.77 2793 2721 661.9
D 8 195 2456211 3706.66 2793 2721 661.9
D 7 238 1039417 1566.21 2793 2721 661.9

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