ASTROSAT CZTI

Data Quality Report

Orbit 09252

Creation date: 2024-06-27T15:43:14.227238
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/AS1A03_091T02_9000001292_09252cztM0_level2.evt modeM0/AS1A03_091T02_9000001292_09252cztM0_level2_quad_clean.evt
Size (bytes)529,447,68082,005,120
Size504.9 MB 78.2 MB
Events in quadrant A4,206,406494,683
Events in quadrant B3,803,612496,644
Events in quadrant C3,708,682484,865
Events in quadrant D3,793,211472,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173693
B0162512
C0164042
D0167022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76912172.821480%
B76911251.625276%
C76911041.352230%
D76911321.716292%

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 9246 7694 85 85 0.92% 1.10%
B 9246 7694 3 3 0.03% 0.04%
C 9246 7694 1 1 0.01% 0.01%
D 9246 7694 49 49 0.53% 0.64%

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 8 5 499333 2596.63 937 915 191.9
A 15 174 59914 307.37 937 915 191.9
A 1 162 19668 97.7 937 915 191.9
B 0 214 47043 251.74 946 923 183.2
B 4 173 31669 167.82 946 923 183.2
B 0 187 27590 145.56 946 923 183.2
C 9 68 150108 699.88 909 912 213.2
C 13 61 6930 28.23 909 912 213.2
C 12 4 6332 25.43 909 912 213.2
D 7 71 151103 618.98 901 878 242.7
D 2 136 85410 348.3 901 878 242.7
D 1 52 51789 209.77 901 878 242.7

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