ASTROSAT CZTI

Data Quality Report

Orbit 44579

Creation date: 2024-06-27T23:04:38.101391
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/AS1A13_080T04_9000006004_44579cztM0_level2.fits modeM0/AS1A13_080T04_9000006004_44579cztM0_level2_quad_clean.evt
Size (bytes)612,855,360113,656,320
Size584.5 MB 108.4 MB
Events in quadrant A5,356,576778,674
Events in quadrant B5,801,063738,542
Events in quadrant C4,786,699728,609
Events in quadrant D6,164,246677,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224161
B0223311
C0194511
D0235761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74413985.348743%
B7442107414.431604%
C74417429.971778%
D74416288.439726%

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 7456 7441 9 9 0.12% 0.12%
B 7457 7443 521 521 6.99% 7.00%
C 7455 7441 315 315 4.23% 4.23%
D 7456 7441 362 362 4.86% 4.86%

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 1954983 11017.84 847 828 177.4
A 10 248 70073 390.41 847 828 177.4
A 13 248 27021 147.68 847 828 177.4
B 0 189 873700 5487.71 812 785 159.1
B 5 172 866622 5443.21 812 785 159.1
B 4 171 530597 3330.74 812 785 159.1
C 15 208 1313488 6976.62 802 803 188.2
C 14 254 144894 765.81 802 803 188.2
C 12 249 60403 316.76 802 803 188.2
D 13 249 1015128 4931.0 822 793 205.7
D 1 52 867666 4214.14 822 793 205.7
D 13 174 765395 3716.97 822 793 205.7

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