ASTROSAT CZTI

Data Quality Report

Orbit 35152

Creation date: 2022-03-30T06:57:06.624742
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/AS1A11_069T01_9000005034_35152cztM0_level2.evt modeM0/AS1A11_069T01_9000005034_35152cztM0_level2_quad_clean.evt
Size (bytes)701,899,20066,816,000
Size669.4 MB 63.7 MB
Events in quadrant A2,925,622443,619
Events in quadrant B8,481,125326,692
Events in quadrant C3,827,019431,831
Events in quadrant D5,613,684396,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125933
B0292962
C0150252
D0209492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6056100.165125%
B6056237039.134742%
C60562073.418098%
D60565008.256275%

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 8652 6058 2 2 0.02% 0.03%
B 8652 6057 1613 1613 18.64% 26.63%
C 8652 6058 183 183 2.12% 3.02%
D 8652 6058 355 355 4.10% 5.86%

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 10 83 95577 654.41 709 692 145.0
A 9 143 54556 371.5 709 692 145.0
A 13 6 22089 147.57 709 692 145.0
B 5 236 6003011 53372.12 578 562 112.5
B 5 172 175826 1558.39 578 562 112.5
B 4 232 16993 146.1 578 562 112.5
C 0 207 671569 4173.35 683 689 160.8
C 15 214 253301 1571.43 683 689 160.8
C 0 10 204911 1270.41 683 689 160.8
D 8 195 1715631 10367.84 672 654 165.4
D 12 79 328595 1982.56 672 654 165.4
D 13 249 282302 1702.69 672 654 165.4

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