ASTROSAT CZTI

Data Quality Report

Orbit 23451

Creation date: 2024-06-27T18:54:30.276133
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_100T02_9000003470_23451cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23451cztM0_level2_quad_clean.evt
Size (bytes)560,545,92092,681,280
Size534.6 MB 88.4 MB
Events in quadrant A3,549,118601,302
Events in quadrant B3,506,567600,749
Events in quadrant C3,381,468581,083
Events in quadrant D6,085,588557,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145521
B0143571
C0139192
D0226551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66891462.182688%
B66902233.333333%
C66891662.481686%
D66895868.760652%

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 7674 6689 10 10 0.13% 0.15%
B 7675 6690 8 8 0.10% 0.12%
C 7674 6689 0 0 0.00% 0.00%
D 7674 6689 408 408 5.32% 6.10%

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 31 179186 1052.37 854 835 169.5
A 12 96 72022 420.04 854 835 169.5
A 13 254 10630 57.8 854 835 169.5
B 7 187 31397 198.56 840 821 154.0
B 7 219 28572 180.21 840 821 154.0
B 7 251 25759 161.94 840 821 154.0
C 14 238 131057 692.9 820 826 188.0
C 7 247 19752 100.69 820 826 188.0
C 3 233 17578 89.13 820 826 188.0
D 1 52 1740060 8901.22 812 791 195.4
D 7 238 558459 2854.03 812 791 195.4
D 12 233 419985 2145.35 812 791 195.4

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