ASTROSAT CZTI

Data Quality Report

Orbit 18045

Creation date: 2024-06-27T17:44:19.439328
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/AS1A06_003T04_9000002682_18045cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18045cztM0_level2_quad_clean.evt
Size (bytes)141,808,32015,229,440
Size135.2 MB 14.5 MB
Events in quadrant A783,91592,192
Events in quadrant B790,04895,274
Events in quadrant C780,95788,910
Events in quadrant D1,841,79579,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031761
B032301
C031571
D064731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1407110.781805%
B1407130.923952%
C1407231.634684%
D140731222.174840%

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 1407 1407 0 0 0.00% 0.00%
B 1407 1407 0 0 0.00% 0.00%
C 1407 1407 0 0 0.00% 0.00%
D 1407 1407 224 224 15.92% 15.92%

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 0 226 1721 35.75 204 199 42.6
A 12 194 1480 30.09 204 199 42.6
A 3 137 1398 28.16 204 199 42.6
B 12 111 4613 107.77 202 198 41.0
B 11 111 3963 91.9 202 198 41.0
B 14 111 3462 79.68 202 198 41.0
C 14 238 30632 677.42 187 188 44.9
C 8 208 11420 249.93 187 188 44.9
C 9 160 1703 33.71 187 188 44.9
D 5 222 1102445 23963.73 182 176 46.0
D 7 238 22485 485.01 182 176 46.0
D 1 52 10391 222.08 182 176 46.0

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