ASTROSAT CZTI

Data Quality Report

Orbit 37969

Creation date: 2024-06-27T21:46:47.994107
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_082T01_9000005356_37969cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37969cztM0_level2_quad_clean.evt
Size (bytes)468,152,64068,212,800
Size446.5 MB 65.1 MB
Events in quadrant A3,707,894434,317
Events in quadrant B2,847,879447,201
Events in quadrant C2,780,586461,454
Events in quadrant D4,502,714371,559

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150083
B0113392
C0110862
D0163672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4998220.440176%
B4998691.380552%
C4998390.780312%
D499871514.305722%

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 7060 4999 5 5 0.07% 0.10%
B 7060 4999 49 49 0.69% 0.98%
C 7060 4999 16 16 0.23% 0.32%
D 7060 4998 626 626 8.87% 12.53%

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 15 222 893100 7156.52 628 618 124.7
A 10 83 356458 2853.36 628 618 124.7
A 13 6 10376 78.25 628 618 124.7
B 5 172 188888 1629.19 623 607 115.6
B 5 184 93574 804.44 623 607 115.6
B 0 229 37371 318.12 623 607 115.6
C 15 214 215141 1522.63 621 627 140.9
C 0 10 107733 760.24 621 627 140.9
C 14 254 27506 190.79 621 627 140.9
D 12 227 1990273 14330.52 578 564 138.8
D 13 249 130109 933.02 578 564 138.8
D 10 199 72549 518.46 578 564 138.8

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