ASTROSAT CZTI

Data Quality Report

Orbit 38334

Creation date: 2024-06-27T21:51:24.053950
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/AS1A10_094T24_9000005374_38334cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38334cztM0_level2_quad_clean.evt
Size (bytes)443,589,12084,568,320
Size423.0 MB 80.7 MB
Events in quadrant A2,719,510589,822
Events in quadrant B2,654,616605,984
Events in quadrant C2,395,129576,673
Events in quadrant D8,256,382431,989

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112573
B0112552
C0103052
D0281432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5081360.708522%
B5081661.298957%
C508170.137768%
D5081113822.397166%

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 7054 5082 28 28 0.40% 0.55%
B 7054 5082 21 21 0.30% 0.41%
C 7054 5082 4 4 0.06% 0.08%
D 7054 5082 1156 1156 16.39% 22.75%

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 383806 3412.57 554 543 112.3
A 13 248 92933 822.64 554 543 112.3
A 12 189 68342 603.68 554 543 112.3
B 0 183 267614 2516.69 558 543 106.1
B 0 229 98056 918.89 558 543 106.1
B 10 245 24603 226.72 558 543 106.1
C 15 214 215427 1698.9 546 549 126.5
C 0 10 19768 151.95 546 549 126.5
C 1 23 8434 62.34 546 549 126.5
D 10 203 4642855 37152.26 507 493 125.0
D 2 16 532708 4259.25 507 493 125.0
D 2 250 358031 2861.33 507 493 125.0

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