ASTROSAT CZTI

Data Quality Report

Orbit 09430

Creation date: 2024-06-27T15:45:51.283246
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/AS1A02_178T01_9000001340_09430cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09430cztM0_level2_quad_clean.evt
Size (bytes)78,462,72014,310,720
Size74.8 MB 13.6 MB
Events in quadrant A574,48383,539
Events in quadrant B573,20585,962
Events in quadrant C550,56187,609
Events in quadrant D591,91084,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09369
B09167
C09155
D08971

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093406918
B092336749
C091486634
D095546992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B040
C042
D031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116950.427716%
B121070.578512%
C123530.242915%
D1218100.821018%

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 5162 1605 0 0 0.00% 0.00%
B 5164 1657 0 0 0.00% 0.00%
C 5163 1698 0 0 0.00% 0.00%
D 5164 1646 1 1 0.02% 0.06%

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 5 38113 1253.49 137 134 30.3
A 14 111 4204 134.33 137 134 30.3
A 1 162 2357 73.37 137 134 30.3
B 4 173 6306 204.96 143 140 30.1
B 0 214 5629 182.46 143 140 30.1
B 12 111 2959 93.71 143 140 30.1
C 9 68 3247 89.52 140 140 34.7
C 13 61 1054 26.33 140 140 34.7
C 14 67 737 17.2 140 140 34.7
D 8 195 40618 1034.17 137 134 39.1
D 1 52 8227 206.74 137 134 39.1
D 7 71 7354 184.44 137 134 39.1

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