ASTROSAT CZTI

Data Quality Report

Orbit 12571

Creation date: 2024-06-27T16:29:35.411920
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/AS1A04_212T03_9000001866_12571cztM0_level2.evt modeM0/AS1A04_212T03_9000001866_12571cztM0_level2_quad_clean.evt
Size (bytes)720,529,920129,395,520
Size687.2 MB 123.4 MB
Events in quadrant A5,162,141793,796
Events in quadrant B5,360,104805,372
Events in quadrant C5,062,870789,891
Events in quadrant D5,478,951756,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228053
B0230622
C0228542
D0240122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11164980.877822%
B11164920.824077%
C11164780.698674%
D111641471.316732%

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 12315 11166 19 19 0.15% 0.17%
B 12315 11165 1 1 0.01% 0.01%
C 12315 11166 10 10 0.08% 0.09%
D 12315 11166 79 79 0.64% 0.71%

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 13 248 50054 180.5 1309 1280 270.2
A 12 189 49865 179.8 1309 1280 270.2
A 3 1 15977 54.39 1309 1280 270.2
B 11 51 84209 330.79 1309 1275 250.7
B 0 214 67018 262.22 1309 1275 250.7
B 0 230 57335 223.6 1309 1275 250.7
C 15 208 104867 353.28 1265 1270 293.2
C 14 234 9868 29.32 1265 1270 293.2
C 13 61 9204 27.06 1265 1270 293.2
D 1 52 499791 1648.22 1255 1215 302.5
D 13 249 75019 243.99 1255 1215 302.5
D 2 234 42624 136.89 1255 1215 302.5

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