ASTROSAT CZTI

Data Quality Report

Orbit 42358

Creation date: 2024-06-27T22:39:24.610586
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_102T01_9000005798_42358cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42358cztM0_level2_quad_clean.evt
Size (bytes)329,250,24096,540,480
Size314.0 MB 92.1 MB
Events in quadrant A3,030,867666,493
Events in quadrant B2,826,010667,402
Events in quadrant C2,577,975635,950
Events in quadrant D3,348,932590,629

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122102
B0115932
C0105932
D01335610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5188200.385505%
B5188450.867386%
C518740.077116%
D5187881.696549%

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 7281 5189 10 10 0.14% 0.19%
B 7281 5189 32 32 0.44% 0.62%
C 7281 5189 1 1 0.01% 0.02%
D 7280 5188 74 74 1.02% 1.43%

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 565202 4594.49 608 597 122.9
A 13 248 85988 694.87 608 597 122.9
A 10 255 12483 96.72 608 597 122.9
B 3 112 150050 1318.97 597 582 113.3
B 0 245 71320 624.22 597 582 113.3
B 5 172 63292 553.38 597 582 113.3
C 15 214 218569 1598.25 594 599 136.4
C 15 111 17725 125.58 594 599 136.4
C 8 79 14621 102.82 594 599 136.4
D 1 52 366573 2569.48 594 580 142.4
D 12 233 195753 1370.23 594 580 142.4
D 10 199 109564 765.13 594 580 142.4

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