ASTROSAT CZTI

Data Quality Report

Orbit 25765

Creation date: 2024-06-27T19:21:15.098705
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_25765cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25765cztM0_level2_quad_clean.evt
Size (bytes)525,087,360108,129,600
Size500.8 MB 103.1 MB
Events in quadrant A3,303,121735,282
Events in quadrant B3,409,898754,939
Events in quadrant C3,414,015705,899
Events in quadrant D5,361,741652,522

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136430
B0139430
C0138460
D0200500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6103711.163362%
B61031051.720465%
C61021191.950180%
D610265510.734186%

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 7498 6103 1 1 0.01% 0.02%
B 7498 6103 4 4 0.05% 0.07%
C 7497 6102 3 3 0.04% 0.05%
D 7497 6102 593 593 7.91% 9.72%

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 10089 54.7 855 840 169.1
A 0 226 7304 38.23 855 840 169.1
A 3 137 7153 37.34 855 840 169.1
B 0 190 20928 127.99 855 838 157.0
B 12 111 17725 107.58 855 838 157.0
B 0 229 17153 103.94 855 838 157.0
C 14 238 134211 709.19 818 827 188.1
C 3 233 83041 437.13 818 827 188.1
C 15 127 8431 40.43 818 827 188.1
D 12 2 1378651 7368.13 784 768 187.0
D 8 195 314779 1679.15 784 768 187.0
D 7 80 308375 1644.91 784 768 187.0

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