ASTROSAT CZTI

Data Quality Report

Orbit 19071

Creation date: 2024-06-27T17:58:44.180206
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/AS1A05_046T01_9000002834_19071cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19071cztM0_level2_quad_clean.evt
Size (bytes)1,983,251,520213,456,960
Size1.8 GB 203.6 MB
Events in quadrant A8,912,1881,348,530
Events in quadrant B10,869,9031,367,287
Events in quadrant C9,001,6541,335,572
Events in quadrant D30,018,8901,121,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387904
B0442494
C0386304
D01022045

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187333371.798964%
B187346913.688481%
C187343671.959005%
D18733723338.611007%

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 20648 18737 14 14 0.07% 0.07%
B 20649 18738 178 178 0.86% 0.95%
C 20649 18738 0 0 0.00% 0.00%
D 20648 18736 5547 5547 26.86% 29.61%

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 9 143 113795 242.31 2283 2229 460.4
A 13 254 25238 49.97 2283 2229 460.4
A 0 226 19601 37.73 2283 2229 460.4
B 6 36 846192 1927.6 2267 2205 437.8
B 7 220 370027 840.08 2267 2205 437.8
B 4 216 217932 492.7 2267 2205 437.8
C 14 238 338302 648.61 2204 2219 518.2
C 3 233 75040 140.54 2204 2219 518.2
C 13 61 15663 25.95 2204 2219 518.2
D 7 238 17060993 35959.09 1932 1876 474.4
D 1 20 4055612 8544.91 1932 1876 474.4
D 12 218 607523 1276.65 1932 1876 474.4

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