ASTROSAT CZTI

Data Quality Report

Orbit 50715

Creation date: 2025-02-12T09:16:52.462718
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/AS1C09_003T01_9000006448_50715cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50715cztM0_level2_quad_clean.evt
Size (bytes)650,609,280108,221,760
Size620.5 MB 103.2 MB
Events in quadrant A4,676,356717,922
Events in quadrant B4,157,557789,785
Events in quadrant C6,466,717653,057
Events in quadrant D8,180,895575,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191510
B0178650
C0246670
D0297160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7768811.042739%
B7768991.274459%
C776882510.620494%
D7768125016.091658%

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 7768 7768 67 67 0.86% 0.86%
B 7768 7768 52 52 0.67% 0.67%
C 7768 7768 559 559 7.20% 7.20%
D 7768 7768 1089 1089 14.02% 14.02%

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 9 191 423595 2091.42 816 796 202.2
A 3 161 154149 758.58 816 796 202.2
A 5 240 134532 661.54 816 796 202.2
B 0 213 157061 913.17 819 791 171.1
B 10 60 90756 525.71 819 791 171.1
B 8 128 85141 492.9 819 791 171.1
C 5 10 1629325 7535.36 777 770 216.1
C 0 177 361345 1668.39 777 770 216.1
C 13 3 227640 1049.73 777 770 216.1
D 8 176 2089764 10152.54 743 717 205.8
D 2 249 1462969 7106.39 743 717 205.8
D 0 18 589959 2863.65 743 717 205.8

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