ASTROSAT CZTI

Data Quality Report

Orbit 40741

Creation date: 2024-06-27T22:19:52.024559
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/AS1A12_066T01_9000005562_40741cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40741cztM0_level2_quad_clean.evt
Size (bytes)587,309,76083,355,840
Size560.1 MB 79.5 MB
Events in quadrant A3,240,153642,869
Events in quadrant B2,790,063655,131
Events in quadrant C10,097,281351,227
Events in quadrant D5,152,760461,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130263
B0121961
C0340051
D0192751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5910120.203046%
B5910170.287648%
C5910294849.881557%
D5910147124.890017%

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 7194 5912 3 3 0.04% 0.05%
B 7194 5912 6 6 0.08% 0.10%
C 7194 5911 2843 2843 39.52% 48.10%
D 7194 5911 366 366 5.09% 6.19%

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 514630 3775.37 659 645 136.1
A 12 189 68385 497.57 659 645 136.1
A 13 248 67772 493.07 659 645 136.1
B 0 229 110171 854.04 653 634 128.3
B 0 190 45616 350.72 653 634 128.3
B 0 230 28907 220.44 653 634 128.3
C 9 187 7748984 64350.81 512 516 120.4
C 15 214 204674 1695.53 512 516 120.4
C 14 254 107278 886.66 512 516 120.4
D 12 227 1221110 8456.75 578 561 144.3
D 2 249 524645 3631.19 578 561 144.3
D 12 128 364569 2522.08 578 561 144.3

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