ASTROSAT CZTI

Data Quality Report

Orbit 25986

Creation date: 2024-06-27T19:23:32.695648
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/AS1A07_068T01_9000003760_25986cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25986cztM0_level2_quad_clean.evt
Size (bytes)1,244,583,360216,129,600
Size1.2 GB 206.1 MB
Events in quadrant A8,742,6181,393,978
Events in quadrant B7,917,2301,395,086
Events in quadrant C7,893,0151,324,815
Events in quadrant D12,037,6261,306,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365170
B0339540
C0340660
D0467540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163022891.772789%
B163101440.882894%
C163072081.275526%
D163087324.488595%

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 18673 16322 94 94 0.50% 0.58%
B 18673 16322 1 1 0.01% 0.01%
C 18673 16322 0 0 0.00% 0.00%
D 18673 16321 618 618 3.31% 3.79%

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 0 13 955685 2361.3 2021 1979 403.9
A 13 254 24322 55.32 2021 1979 403.9
A 3 137 18858 41.79 2021 1979 403.9
B 12 111 46955 118.17 2003 1954 380.8
B 0 190 42419 106.26 2003 1954 380.8
B 11 111 41849 104.76 2003 1954 380.8
C 14 238 309800 692.89 1909 1925 444.3
C 0 207 86245 189.77 1909 1925 444.3
C 3 233 63392 138.33 1909 1925 444.3
D 1 52 3254483 7174.33 1906 1861 453.4
D 12 233 1190228 2621.19 1906 1861 453.4
D 10 230 224620 491.34 1906 1861 453.4

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