ASTROSAT CZTI

Data Quality Report

Orbit 18970

Creation date: 2024-06-27T17:57:14.196311
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_205T01_9000002824_18970cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18970cztM0_level2_quad_clean.evt
Size (bytes)583,416,00094,792,320
Size556.4 MB 90.4 MB
Events in quadrant A3,249,040615,558
Events in quadrant B3,515,177619,958
Events in quadrant C3,292,339600,450
Events in quadrant D7,145,085554,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140813
B0148522
C0141422
D0259722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6893490.710866%
B68931061.537792%
C6893761.102568%
D6893101514.725083%

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 7728 6894 0 0 0.00% 0.00%
B 7728 6894 22 22 0.28% 0.32%
C 7728 6894 8 8 0.10% 0.12%
D 7728 6894 775 775 10.03% 11.24%

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 6 16 47536 275.68 831 812 169.5
A 13 254 7433 39.07 831 812 169.5
A 0 226 7319 38.39 831 812 169.5
B 7 220 103940 647.32 828 807 159.3
B 3 112 37999 233.44 828 807 159.3
B 3 64 33060 202.44 828 807 159.3
C 14 238 122757 651.12 797 803 187.3
C 0 207 27548 142.79 797 803 187.3
C 9 54 15518 78.56 797 803 187.3
D 12 218 2495089 13371.27 759 738 186.5
D 7 238 1156773 6197.06 759 738 186.5
D 1 52 582890 3120.7 759 738 186.5

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