ASTROSAT CZTI

Data Quality Report

Orbit 22346

Creation date: 2024-06-27T18:39:43.450063
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/AS1T03_147T01_9000003306_22346cztM0_level2.evt modeM0/AS1T03_147T01_9000003306_22346cztM0_level2_quad_clean.evt
Size (bytes)636,082,560153,838,080
Size606.6 MB 146.7 MB
Events in quadrant A4,458,1021,018,006
Events in quadrant B4,607,3801,047,897
Events in quadrant C4,665,540978,619
Events in quadrant D4,891,062958,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196163
B0199002
C0199762
D0210832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9469300.316823%
B9469560.591404%
C9469830.876545%
D9469470.496357%

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 11759 9471 0 0 0.00% 0.00%
B 11759 9471 2 2 0.02% 0.02%
C 11759 9471 1 1 0.01% 0.01%
D 11759 9471 8 8 0.07% 0.08%

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 13 254 12601 49.68 1155 1131 230.9
A 3 137 9900 37.98 1155 1131 230.9
A 0 226 9876 37.88 1155 1131 230.9
B 12 111 26904 117.66 1166 1137 219.0
B 11 111 23707 103.06 1166 1137 219.0
B 14 111 21681 93.81 1166 1137 219.0
C 14 238 178233 677.1 1119 1128 261.6
C 10 22 68201 256.43 1119 1128 261.6
C 0 10 25378 92.71 1119 1128 261.6
D 12 227 582457 2150.71 1122 1092 270.3
D 1 52 64745 235.48 1122 1092 270.3
D 2 234 34915 125.13 1122 1092 270.3

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