ASTROSAT CZTI

Data Quality Report

Orbit 14280

Creation date: 2024-06-27T16:52:51.420370
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/AS1G08_014T01_9000002104_14280cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14280cztM0_level2_quad_clean.evt
Size (bytes)1,500,298,560244,152,000
Size1.4 GB 232.8 MB
Events in quadrant A9,442,3871,584,775
Events in quadrant B11,189,3111,574,372
Events in quadrant C10,106,1821,488,292
Events in quadrant D13,428,4391,450,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397885
B0454484
C0412664
D0522064

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188291590.844442%
B188299875.241914%
C188291380.732912%
D188297523.993839%

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 21335 18834 0 0 0.00% 0.00%
B 21335 18833 509 509 2.39% 2.70%
C 21335 18834 6 6 0.03% 0.03%
D 21335 18834 639 639 3.00% 3.39%

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 15 318671 684.71 2274 2224 462.2
A 12 189 316849 680.76 2274 2224 462.2
A 9 143 61183 127.57 2274 2224 462.2
B 0 182 1462062 3456.85 2216 2157 422.3
B 0 229 766840 1810.66 2216 2157 422.3
B 3 209 91040 210.46 2216 2157 422.3
C 3 233 1585931 3126.64 2182 2193 506.5
C 13 61 15526 26.32 2182 2193 506.5
C 14 234 11628 18.63 2182 2193 506.5
D 5 222 2661792 5192.77 2165 2116 512.2
D 12 110 1452512 2831.76 2165 2116 512.2
D 8 195 382065 741.81 2165 2116 512.2

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