ASTROSAT CZTI

Data Quality Report

Orbit 14747

Creation date: 2024-06-27T16:59:00.888254
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/AS1A04_203T01_9000002180_14747cztM0_level2.evt modeM0/AS1A04_203T01_9000002180_14747cztM0_level2_quad_clean.evt
Size (bytes)492,932,16074,240,640
Size470.1 MB 70.8 MB
Events in quadrant A4,593,216456,628
Events in quadrant B3,325,006466,252
Events in quadrant C3,603,863452,069
Events in quadrant D2,993,439447,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177032
B0134681
C0142661
D0126901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60901782.922824%
B60901001.642036%
C6090831.362890%
D6090560.919540%

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 7296 6091 57 57 0.78% 0.94%
B 7296 6091 25 25 0.34% 0.41%
C 7296 6091 29 29 0.40% 0.48%
D 7296 6091 5 5 0.07% 0.08%

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 8 15 1438229 8998.78 793 778 159.7
A 12 189 80512 499.15 793 778 159.7
A 1 162 9953 57.44 793 778 159.7
B 4 142 129134 861.81 784 767 149.0
B 0 205 43520 287.03 784 767 149.0
B 10 16 28609 186.92 784 767 149.0
C 4 254 345551 1993.04 755 761 173.0
C 3 233 304104 1753.46 755 761 173.0
C 13 61 5553 27.7 755 761 173.0
D 2 234 24497 127.6 771 753 186.1
D 13 172 22163 115.06 771 753 186.1
D 2 120 18093 93.19 771 753 186.1

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