ASTROSAT CZTI

Data Quality Report

Orbit 46863

Creation date: 2024-06-27T23:28:38.206482
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_053T01_9000006274_46863cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46863cztM0_level2_quad_clean.evt
Size (bytes)418,988,16095,158,080
Size399.6 MB 90.7 MB
Events in quadrant A5,530,575629,878
Events in quadrant B2,846,565653,047
Events in quadrant C2,848,556621,621
Events in quadrant D3,820,306560,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197751
B0125321
C0129291
D0155321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59611752.935749%
B5961711.191075%
C59621302.180476%
D59623355.618920%

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 6976 5961 20 20 0.29% 0.34%
B 6976 5962 8 8 0.11% 0.13%
C 6977 5963 88 88 1.26% 1.48%
D 6977 5963 238 238 3.41% 3.99%

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 2948156 21750.73 652 637 135.5
A 7 3 38451 279.04 652 637 135.5
A 13 248 9762 67.34 652 637 135.5
B 3 112 146402 1132.49 646 627 128.7
B 0 200 46779 358.54 646 627 128.7
B 5 172 28485 216.42 646 627 128.7
C 14 254 338695 2251.22 635 638 150.2
C 3 233 20399 131.59 635 638 150.2
C 0 207 7749 47.35 635 638 150.2
D 13 249 661611 4123.72 634 615 160.3
D 1 52 639953 3988.6 634 615 160.3
D 11 192 38681 237.48 634 615 160.3

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