ASTROSAT CZTI

Data Quality Report

Orbit 23956

Creation date: 2024-06-27T19:00:28.123551
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_101T02_9000003544_23956cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23956cztM0_level2_quad_clean.evt
Size (bytes)567,601,92063,961,920
Size541.3 MB 61.0 MB
Events in quadrant A3,283,850385,367
Events in quadrant B3,418,502389,700
Events in quadrant C3,428,329379,058
Events in quadrant D6,648,354358,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135791
B0139901
C0140111
D0241661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6066791.302341%
B60671061.747157%
C60671312.159222%
D606777012.691610%

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 7431 6067 0 0 0.00% 0.00%
B 7432 6068 18 18 0.24% 0.30%
C 7432 6068 5 5 0.07% 0.08%
D 7432 6068 612 612 8.23% 10.09%

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 10251 55.99 850 834 168.2
A 0 226 7555 39.96 850 834 168.2
A 15 174 7024 36.8 850 834 168.2
B 3 64 65798 419.83 835 818 154.8
B 0 189 27989 175.55 835 818 154.8
B 4 216 25323 158.32 835 818 154.8
C 14 238 133410 716.58 816 825 185.0
C 0 239 72307 386.34 816 825 185.0
C 0 10 34402 181.47 816 825 185.0
D 12 218 2004623 10552.41 790 767 189.9
D 8 195 977541 5143.74 790 767 189.9
D 2 82 216388 1135.47 790 767 189.9

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