ASTROSAT CZTI

Data Quality Report

Orbit 29799

Creation date: 2024-06-27T20:07:50.859610
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/AS1T03_291T01_9000004278_29799cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29799cztM0_level2_quad_clean.evt
Size (bytes)1,342,923,840211,173,120
Size1.3 GB 201.4 MB
Events in quadrant A6,952,1921,411,727
Events in quadrant B11,738,8301,406,615
Events in quadrant C7,348,9711,353,059
Events in quadrant D13,642,9191,212,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302213
B0455213
C0310493
D0498743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146491551.058093%
B146495533.775002%
C146494673.187931%
D14650249217.010239%

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 15324 14653 2 2 0.01% 0.01%
B 15324 14653 17 17 0.11% 0.12%
C 15324 14653 44 44 0.29% 0.30%
D 15325 14654 2277 2277 14.86% 15.54%

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 13 254 31768 83.04 1794 1754 361.5
A 3 137 18456 46.21 1794 1754 361.5
A 12 96 16837 41.73 1794 1754 361.5
B 6 159 4252391 12615.27 1769 1725 336.9
B 0 229 484033 1431.41 1769 1725 336.9
B 12 111 42451 120.87 1769 1725 336.9
C 14 238 278380 686.69 1729 1738 402.9
C 10 22 259860 640.72 1729 1738 402.9
C 3 233 35920 84.85 1729 1738 402.9
D 7 238 5847191 14771.1 1673 1625 395.7
D 8 195 1036828 2615.84 1673 1625 395.7
D 2 250 122884 306.41 1673 1625 395.7

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