ASTROSAT CZTI

Data Quality Report

Orbit 22570

Creation date: 2024-06-27T18:42:57.808802
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_054T01_9000003348_22570cztM0_level2.evt modeM0/AS1A07_054T01_9000003348_22570cztM0_level2_quad_clean.evt
Size (bytes)487,051,200125,061,120
Size464.5 MB 119.3 MB
Events in quadrant A3,537,334830,454
Events in quadrant B3,741,109832,199
Events in quadrant C3,481,567810,750
Events in quadrant D3,489,388801,275

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157102
B0163042
C0153562
D0157892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7366370.502308%
B73661151.561227%
C7366741.004616%
D7366350.475156%

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 7711 7366 1 1 0.01% 0.01%
B 7711 7366 14 14 0.18% 0.19%
C 7711 7366 1 1 0.01% 0.01%
D 7711 7366 8 8 0.10% 0.11%

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 34 194180 1103.22 867 848 175.2
A 13 254 13036 69.55 867 848 175.2
A 0 226 7554 38.27 867 848 175.2
B 15 33 243725 1462.19 866 843 166.1
B 15 35 35287 207.36 866 843 166.1
B 0 190 28395 165.87 866 843 166.1
C 14 238 132531 670.35 843 848 196.4
C 10 22 44904 224.27 843 848 196.4
C 0 239 12199 57.78 843 848 196.4
D 2 136 146229 705.5 849 824 206.1
D 1 52 54889 262.32 849 824 206.1
D 2 234 29804 140.61 849 824 206.1

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