ASTROSAT CZTI

Data Quality Report

Orbit 35207

Creation date: 2022-04-04T19:36:57.624933
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/AS1C07_004T01_9000005052_35207cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35207cztM0_level2_quad_clean.evt
Size (bytes)588,741,12067,864,320
Size561.5 MB 64.7 MB
Events in quadrant A2,573,284442,482
Events in quadrant B6,533,180404,403
Events in quadrant C3,044,001429,115
Events in quadrant D5,316,532402,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111793
B0231302
C0123312
D0195282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370120.223464%
B5370141626.368715%
C53701362.532588%
D53703225.996276%

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 7193 5371 2 2 0.03% 0.04%
B 7193 5371 941 941 13.08% 17.52%
C 7193 5371 107 107 1.49% 1.99%
D 7193 5371 363 363 5.05% 6.76%

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 10 83 103596 827.22 622 613 124.5
A 9 143 33730 266.02 622 613 124.5
A 13 6 10480 79.26 622 613 124.5
B 5 236 4236247 40068.85 555 541 105.7
B 4 232 86945 817.36 555 541 105.7
B 0 189 17692 162.24 555 541 105.7
C 0 10 365850 2667.84 592 597 136.9
C 15 214 223905 1631.06 592 597 136.9
C 1 23 91769 665.93 592 597 136.9
D 8 195 1746755 12072.14 589 573 144.6
D 1 47 472694 3263.98 589 573 144.6
D 10 118 291234 2009.47 589 573 144.6

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