ASTROSAT CZTI

Data Quality Report

Orbit 16201

Creation date: 2024-06-27T17:19:17.422748
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/AS1T02_109T01_9000002386_16201cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16201cztM0_level2_quad_clean.evt
Size (bytes)632,502,72082,175,040
Size603.2 MB 78.4 MB
Events in quadrant A4,321,722499,618
Events in quadrant B3,971,522512,808
Events in quadrant C3,903,361492,478
Events in quadrant D6,446,132457,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178204
B0165912
C0162332
D0243502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75602903.835979%
B75601912.526455%
C75601802.380952%
D756099113.108466%

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 8347 7564 138 138 1.65% 1.82%
B 8347 7564 17 17 0.20% 0.22%
C 8347 7564 1 1 0.01% 0.01%
D 8347 7564 606 606 7.26% 8.01%

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 15 174 719537 3787.55 931 911 189.7
A 8 247 19139 96.07 931 911 189.7
A 0 226 8384 39.39 931 911 189.7
B 0 198 116001 643.03 934 909 179.0
B 4 216 44339 242.65 934 909 179.0
B 0 189 43088 235.66 934 909 179.0
C 14 238 139301 658.34 895 901 210.2
C 7 247 123579 583.55 895 901 210.2
C 10 22 84513 397.72 895 901 210.2
D 2 233 2600282 12191.27 863 834 213.2
D 1 52 355130 1661.63 863 834 213.2
D 10 70 92930 431.93 863 834 213.2

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