ASTROSAT CZTI

Data Quality Report

Orbit 41362

Creation date: 2024-06-27T22:28:07.729198
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/AS1T05_105T01_9000005658_41362cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41362cztM0_level2_quad_clean.evt
Size (bytes)1,106,668,800264,064,320
Size1.0 GB 251.8 MB
Events in quadrant A8,249,4541,844,119
Events in quadrant B7,667,4971,903,303
Events in quadrant C8,575,4801,741,132
Events in quadrant D15,231,8551,402,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336733
B0336193
C0352423
D0565113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16024160.099850%
B16024570.355716%
C160243932.452571%
D16024245015.289566%

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 22305 16027 6 6 0.03% 0.04%
B 22305 16027 36 36 0.16% 0.22%
C 22305 16027 389 389 1.74% 2.43%
D 22305 16027 2378 2378 10.66% 14.84%

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 1277488 3499.44 1799 1766 364.6
A 12 189 26992 69.2 1799 1766 364.6
A 3 137 19963 49.92 1799 1766 364.6
B 5 255 361217 1054.93 1779 1733 340.8
B 0 190 176871 513.96 1779 1733 340.8
B 0 155 93301 268.71 1779 1733 340.8
C 0 10 1193016 3016.92 1706 1717 394.9
C 15 214 667650 1686.45 1706 1717 394.9
C 15 111 52220 127.9 1706 1717 394.9
D 1 47 4183413 10666.47 1599 1555 392.1
D 1 52 2811086 7166.14 1599 1555 392.1
D 5 222 721680 1836.79 1599 1555 392.1

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