ASTROSAT CZTI

Data Quality Report

Orbit 19260

Creation date: 2024-06-27T18:00:46.719913
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/AS1A05_088T02_9000002850_19260cztM0_level2.evt modeM0/AS1A05_088T02_9000002850_19260cztM0_level2_quad_clean.evt
Size (bytes)132,819,84013,118,400
Size126.7 MB 12.5 MB
Events in quadrant A992,55967,000
Events in quadrant B957,04368,760
Events in quadrant C952,73966,565
Events in quadrant D996,52763,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039951
B038411
C038181
D040381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1777512.870006%
B1777512.870006%
C1777583.263928%
D1777643.601576%

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 2707 1777 0 0 0.00% 0.00%
B 2707 1777 0 0 0.00% 0.00%
C 2707 1777 0 0 0.00% 0.00%
D 2707 1777 20 20 0.74% 1.13%

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 8 205 50382 991.22 244 238 50.6
A 0 226 2171 38.21 244 238 50.6
A 13 254 2078 36.37 244 238 50.6
B 12 111 5974 117.91 240 233 48.7
B 11 111 5284 103.74 240 233 48.7
B 14 111 4734 92.44 240 233 48.7
C 14 238 36197 645.94 229 231 55.7
C 3 233 20500 364.03 229 231 55.7
C 13 61 1555 23.78 229 231 55.7
D 1 52 91899 1560.08 233 226 58.8
D 7 238 8748 145.03 233 226 58.8
D 7 96 8625 142.93 233 226 58.8

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