ASTROSAT CZTI

Data Quality Report

Orbit 25778

Creation date: 2024-06-27T19:21:21.232011
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/AS1A09_147T01_9000003754_25778cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25778cztM0_level2_quad_clean.evt
Size (bytes)469,828,80079,263,360
Size448.1 MB 75.6 MB
Events in quadrant A3,254,644510,754
Events in quadrant B3,030,021524,157
Events in quadrant C2,966,728490,989
Events in quadrant D4,597,518482,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132560
B0125080
C0121930
D0173810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56061081.926507%
B5607681.212770%
C5607661.177100%
D56074437.900838%

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 6921 5606 40 40 0.58% 0.71%
B 6922 5607 0 0 0.00% 0.00%
C 6922 5607 0 0 0.00% 0.00%
D 6922 5607 378 378 5.46% 6.74%

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 0 13 301372 1991.0 765 751 151.0
A 13 254 7591 45.3 765 751 151.0
A 0 226 6785 39.96 765 751 151.0
B 12 111 16077 109.22 765 748 140.3
B 11 111 14245 96.17 765 748 140.3
B 0 219 12852 86.24 765 748 140.3
C 14 238 118775 702.02 728 733 168.1
C 3 233 10985 60.97 728 733 168.1
C 13 61 5018 25.48 728 733 168.1
D 7 80 1287781 7494.35 714 697 171.7
D 1 52 331718 1927.45 714 697 171.7
D 8 195 199528 1157.74 714 697 171.7

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