ASTROSAT CZTI

Data Quality Report

Orbit 12186

Creation date: 2024-06-27T16:23:32.821297
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/AS1A04_160T01_9000001798_12186cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12186cztM0_level2_quad_clean.evt
Size (bytes)542,318,400135,656,640
Size517.2 MB 129.4 MB
Events in quadrant A3,607,473942,561
Events in quadrant B5,327,444895,428
Events in quadrant C3,683,318931,841
Events in quadrant D3,379,117899,425

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148813
B0202502
C0150912
D0141592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62921642.606484%
B629282613.127781%
C62921903.019708%
D62921262.002543%

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 7558 6293 11 11 0.15% 0.17%
B 7558 6294 385 385 5.09% 6.12%
C 7558 6294 61 61 0.81% 0.97%
D 7558 6294 14 14 0.19% 0.22%

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 1 162 158244 955.66 833 822 164.7
A 1 178 63282 379.17 833 822 164.7
A 1 161 60955 365.05 833 822 164.7
B 4 239 1725213 12231.75 782 767 141.0
B 15 204 170008 1200.45 782 767 141.0
B 11 51 132217 932.39 782 767 141.0
C 15 208 520651 2877.78 801 803 180.6
C 0 207 32682 176.47 801 803 180.6
C 13 61 5835 27.85 801 803 180.6
D 14 34 87361 460.42 808 787 188.0
D 1 52 44931 234.77 808 787 188.0
D 10 199 42319 220.88 808 787 188.0

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