ASTROSAT CZTI

Data Quality Report

Orbit 29747

Creation date: 2024-06-27T20:07:23.117631
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_29747cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29747cztM0_level2_quad_clean.evt
Size (bytes)564,621,12098,616,960
Size538.5 MB 94.0 MB
Events in quadrant A3,308,231649,024
Events in quadrant B5,450,311655,837
Events in quadrant C3,633,161634,118
Events in quadrant D4,282,372608,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136712
B0201932
C0146802
D0167642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6287290.461269%
B62871562.481311%
C62871602.544934%
D62872574.087800%

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 7622 6287 0 0 0.00% 0.00%
B 7622 6287 18 18 0.24% 0.29%
C 7622 6288 25 25 0.33% 0.40%
D 7622 6288 248 248 3.25% 3.94%

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 12188 66.92 857 841 169.6
A 3 137 7979 42.1 857 841 169.6
A 0 226 7245 37.77 857 841 169.6
B 6 159 1869408 11595.48 853 835 161.1
B 0 229 169806 1048.55 853 835 161.1
B 12 111 18896 112.08 853 835 161.1
C 14 238 135771 707.96 824 833 190.6
C 3 233 119850 624.43 824 833 190.6
C 10 22 110614 575.97 824 833 190.6
D 8 195 494521 2560.42 817 799 192.8
D 2 225 253112 1308.48 817 799 192.8
D 7 80 250149 1293.12 817 799 192.8

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