ASTROSAT CZTI

Data Quality Report

Orbit 42820

Creation date: 2024-06-27T22:44:37.607652
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_001T12_9000005826_42820cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42820cztM0_level2_quad_clean.evt
Size (bytes)311,270,40089,017,920
Size296.9 MB 84.9 MB
Events in quadrant A2,934,208602,209
Events in quadrant B2,646,897603,476
Events in quadrant C2,781,399582,073
Events in quadrant D2,759,265547,315

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119313
B0114012
C0114752
D0118732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5138270.525496%
B5138490.953678%
C5138100.194628%
D5138390.759050%

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 7021 5139 16 16 0.23% 0.31%
B 7021 5139 34 34 0.48% 0.66%
C 7021 5139 8 8 0.11% 0.16%
D 7021 5139 42 42 0.60% 0.82%

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 651376 5669.45 560 550 114.8
A 12 189 49945 430.29 560 550 114.8
A 15 237 38604 331.49 560 550 114.8
B 7 221 107972 1012.91 559 545 106.1
B 5 255 102898 965.07 559 545 106.1
B 0 245 75404 705.84 559 545 106.1
C 3 233 328635 2568.75 554 558 127.7
C 15 214 211315 1650.17 554 558 127.7
C 14 254 28254 216.85 554 558 127.7
D 1 47 229163 1696.42 553 538 134.8
D 1 52 124819 922.18 553 538 134.8
D 7 96 48077 352.74 553 538 134.8

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