ASTROSAT CZTI

Data Quality Report

Orbit 38780

Creation date: 2024-06-27T21:56:18.775034
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_051T01_9000005394_38780cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38780cztM0_level2_quad_clean.evt
Size (bytes)316,673,28093,032,640
Size302.0 MB 88.7 MB
Events in quadrant A2,784,213629,659
Events in quadrant B2,451,517662,884
Events in quadrant C2,575,629619,130
Events in quadrant D3,519,893553,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112433
B0103312
C0103492
D0138152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5022130.258861%
B502290.179211%
C502240.079650%
D50221072.130625%

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 7115 5023 10 10 0.14% 0.20%
B 7115 5023 1 1 0.01% 0.02%
C 7115 5023 4 4 0.06% 0.08%
D 7115 5023 103 103 1.45% 2.05%

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 378954 3200.16 588 577 118.2
A 7 3 116213 978.0 588 577 118.2
A 15 223 10414 83.2 588 577 118.2
B 5 200 39131 338.41 596 579 113.9
B 4 171 24520 210.15 596 579 113.9
B 4 251 16385 138.74 596 579 113.9
C 15 214 223332 1624.7 587 593 137.1
C 0 239 35475 254.44 587 593 137.1
C 0 10 15915 111.76 587 593 137.1
D 2 16 737269 5352.42 571 555 137.6
D 10 118 463615 3364.25 571 555 137.6
D 2 249 95951 693.08 571 555 137.6

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