ASTROSAT CZTI

Data Quality Report

Orbit 23917

Creation date: 2024-06-27T19:00:04.349024
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_142T01_9000003540_23917cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23917cztM0_level2_quad_clean.evt
Size (bytes)599,132,160102,075,840
Size571.4 MB 97.3 MB
Events in quadrant A3,717,695655,796
Events in quadrant B4,268,648658,195
Events in quadrant C3,789,651626,812
Events in quadrant D5,842,341610,545

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160702
B0177142
C0161102
D0225742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7755550.709220%
B77562923.764827%
C77561331.714801%
D77563083.971119%

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 8445 7757 0 0 0.00% 0.00%
B 8446 7758 121 121 1.43% 1.56%
C 8446 7758 1 1 0.01% 0.01%
D 8446 7758 168 168 1.99% 2.17%

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 13261 63.17 963 943 195.0
A 3 137 8383 38.15 963 943 195.0
A 0 226 8355 38.01 963 943 195.0
B 15 33 497940 2751.1 952 927 180.7
B 12 111 21386 113.25 952 927 180.7
B 11 111 18589 97.76 952 927 180.7
C 14 238 144233 664.29 919 924 215.7
C 0 10 26271 117.49 919 924 215.7
C 7 247 18932 83.47 919 924 215.7
D 8 195 1205546 5351.97 921 892 225.1
D 1 52 698488 3099.24 921 892 225.1
D 12 218 214928 950.91 921 892 225.1

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