ASTROSAT CZTI

Data Quality Report

Orbit 01355

Creation date: 2024-06-27T14:11:26.847926
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/AS1G04_002T02_9000000230_01355cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01355cztM0_level2_quad_clean.evt
Size (bytes)1,108,149,12089,233,920
Size1.0 GB 85.1 MB
Events in quadrant A10,636,563561,253
Events in quadrant B7,803,777591,559
Events in quadrant C7,107,555576,949
Events in quadrant D7,610,378547,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359742
B0274801
C0254251
D0270161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607967811.153150%
B6079300.493502%
C607980.131601%
D60794467.336733%

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 6979 6079 1824 1824 26.14% 30.00%
B 6979 6080 321 321 4.60% 5.28%
C 6979 6080 107 107 1.53% 1.76%
D 6979 6079 611 611 8.75% 10.05%

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 15 127 3515345 8176.32 1786 1799 429.7
A 4 32 207635 479.0 1786 1799 429.7
A 0 51 35650 78.77 1786 1799 429.7
B 8 4 233373 511.38 1921 1931 452.6
B 6 53 153172 334.18 1921 1931 452.6
B 12 52 31108 64.47 1921 1931 452.6
C 15 241 132174 263.92 1764 1828 493.9
C 3 79 32880 62.87 1764 1828 493.9
C 3 111 27919 52.83 1764 1828 493.9
D 12 22 1120705 2206.62 1643 1705 507.1
D 9 53 97883 189.66 1643 1705 507.1
D 13 73 54730 104.56 1643 1705 507.1

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