ASTROSAT CZTI

Data Quality Report

Orbit 33301

Creation date: 2024-06-27T20:47:15.054538
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/AS1T04_072T01_9000004780_33301cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33301cztM0_level2_quad_clean.evt
Size (bytes)1,025,605,440129,931,200
Size978.1 MB 123.9 MB
Events in quadrant A6,234,074819,480
Events in quadrant B6,713,338810,387
Events in quadrant C6,759,025805,006
Events in quadrant D10,630,076755,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257924
B0270993
C0267053
D0389893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107473132.912441%
B107474814.475668%
C107473112.893831%
D107475364.987438%

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 14927 10751 210 210 1.41% 1.95%
B 14927 10751 319 319 2.14% 2.97%
C 14927 10751 254 254 1.70% 2.36%
D 14927 10751 469 469 3.14% 4.36%

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 15 169 1329946 5335.31 1244 1220 249.0
A 15 47 72956 288.05 1244 1220 249.0
A 13 254 16035 59.49 1244 1220 249.0
B 5 172 1424047 6092.62 1229 1198 233.5
B 0 189 57028 239.06 1229 1198 233.5
B 0 219 52314 218.88 1229 1198 233.5
C 10 49 520739 1874.53 1206 1215 277.1
C 15 214 491629 1769.5 1206 1215 277.1
C 1 23 474726 1708.51 1206 1215 277.1
D 8 195 3783358 11859.61 1193 1169 318.9
D 12 17 534633 1672.75 1193 1169 318.9
D 7 223 364227 1138.42 1193 1169 318.9

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