ASTROSAT CZTI

Data Quality Report

Orbit 13821

Creation date: 2024-06-27T16:46:31.635420
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/AS1A04_199T01_9000002040_13821cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13821cztM0_level2_quad_clean.evt
Size (bytes)572,595,84090,097,920
Size546.1 MB 85.9 MB
Events in quadrant A3,075,865586,453
Events in quadrant B3,301,655604,840
Events in quadrant C3,061,020588,009
Events in quadrant D7,473,892507,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131753
B0137422
C0131042
D0266172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6331190.300111%
B6331480.758174%
C633150.078976%
D633191914.515874%

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 7587 6333 1 1 0.01% 0.02%
B 7587 6333 17 17 0.22% 0.27%
C 7587 6333 0 0 0.00% 0.00%
D 7587 6332 851 851 11.22% 13.44%

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 8 15 33403 205.05 782 766 159.2
A 1 162 17264 103.65 782 766 159.2
A 0 226 7201 40.43 782 766 159.2
B 3 64 102922 685.56 789 770 149.0
B 0 219 47575 314.12 789 770 149.0
B 4 80 34499 226.36 789 770 149.0
C 3 233 55224 308.26 765 771 176.6
C 4 175 18254 98.97 765 771 176.6
C 13 61 5504 26.79 765 771 176.6
D 10 157 2211402 12543.3 725 706 176.2
D 13 122 1481263 8400.55 725 706 176.2
D 5 222 629586 3568.21 725 706 176.2

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