ASTROSAT CZTI

Data Quality Report

Orbit 15713

Creation date: 2024-06-27T17:12:28.317304
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_198T01_9000002322_15713cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15713cztM0_level2_quad_clean.evt
Size (bytes)1,239,903,360239,137,920
Size1.2 GB 228.1 MB
Events in quadrant A8,581,1071,506,825
Events in quadrant B9,183,5621,522,735
Events in quadrant C8,845,9731,481,951
Events in quadrant D9,694,4951,462,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382205
B0394014
C0382274
D0415354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184122581.401260%
B184122651.439279%
C184122631.428416%
D184123061.661960%

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 20878 18417 43 43 0.21% 0.23%
B 20878 18417 11 11 0.05% 0.06%
C 20878 18417 2 2 0.01% 0.01%
D 20878 18417 162 162 0.78% 0.88%

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 167257 379.98 2160 2112 434.6
A 9 143 51948 114.67 2160 2112 434.6
A 11 29 27300 57.95 2160 2112 434.6
B 4 216 170360 406.82 2163 2103 413.6
B 4 173 120987 287.44 2163 2103 413.6
B 0 189 97027 229.51 2163 2103 413.6
C 3 233 346324 703.98 2086 2098 489.0
C 14 238 324704 659.77 2086 2098 489.0
C 15 127 16641 29.74 2086 2098 489.0
D 1 52 1354060 2422.49 2098 2049 558.1
D 13 172 96265 168.81 2098 2049 558.1
D 12 110 76943 134.19 2098 2049 558.1

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