ASTROSAT CZTI

Data Quality Report

Orbit 31399

Creation date: 2024-06-27T20:27:48.889131
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/AS1T04_026T01_9000004556_31399cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31399cztM0_level2_quad_clean.evt
Size (bytes)601,905,60089,000,640
Size574.0 MB 84.9 MB
Events in quadrant A3,756,285562,571
Events in quadrant B5,838,837555,277
Events in quadrant C3,954,392540,144
Events in quadrant D4,190,783534,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153192
B0222962
C0159042
D0167202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72141492.065428%
B72152984.130284%
C72152563.548164%
D72151081.496881%

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 9339 7215 0 0 0.00% 0.00%
B 9340 7216 3 3 0.03% 0.04%
C 9340 7216 13 13 0.14% 0.18%
D 9340 7217 7 7 0.07% 0.10%

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 13 254 12556 59.62 973 953 194.6
A 3 137 10066 46.83 973 953 194.6
A 0 226 8153 37.0 973 953 194.6
B 6 159 1973962 10667.87 950 926 185.0
B 4 80 113322 607.71 950 926 185.0
B 12 111 23077 119.77 950 926 185.0
C 14 238 168402 767.96 923 929 218.1
C 3 233 78334 354.95 923 929 218.1
C 10 22 37261 166.6 923 929 218.1
D 8 195 346994 1438.55 934 917 240.6
D 10 203 241805 1001.31 934 917 240.6
D 2 250 37026 150.1 934 917 240.6

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