ASTROSAT CZTI

Data Quality Report

Orbit 12118

Creation date: 2024-06-27T16:22:39.644898
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/AS1G08_065T01_9000001796_12118cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12118cztM0_level2_quad_clean.evt
Size (bytes)650,617,920106,698,240
Size620.5 MB 101.8 MB
Events in quadrant A4,059,236692,189
Events in quadrant B5,814,799659,123
Events in quadrant C3,673,530685,266
Events in quadrant D5,627,602651,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174133
B0226412
C0163992
D0220702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78131261.612697%
B78136458.255472%
C7813520.665557%
D78131672.137463%

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 9219 7816 13 13 0.14% 0.17%
B 9219 7816 343 343 3.72% 4.39%
C 9219 7816 8 8 0.09% 0.10%
D 9219 7816 50 50 0.54% 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 1 162 144756 748.97 943 926 192.0
A 13 248 66276 340.3 943 926 192.0
A 1 178 66238 340.1 943 926 192.0
B 4 239 1687972 9801.11 911 888 172.1
B 15 204 217738 1259.79 911 888 172.1
B 11 51 101146 582.45 911 888 172.1
C 15 208 69417 321.19 921 925 213.2
C 14 234 12489 54.23 921 925 213.2
C 13 61 6707 27.11 921 925 213.2
D 1 52 1686950 7685.05 909 883 219.4
D 8 195 131566 595.65 909 883 219.4
D 14 34 126437 572.27 909 883 219.4

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