ASTROSAT CZTI

Data Quality Report

Orbit 09432

Creation date: 2024-06-27T15:45:52.816929
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/AS1A02_178T01_9000001340_09432cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09432cztM0_level2_quad_clean.evt
Size (bytes)60,569,28015,508,800
Size57.8 MB 14.8 MB
Events in quadrant A429,52083,189
Events in quadrant B415,81183,285
Events in quadrant C399,47680,815
Events in quadrant D453,12779,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03680
C03740
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018283
B018210
C018263
D018313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0230
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79950.625782%
B86130.348432%
C87010.114943%
D72330.414938%

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 805 805 1 1 0.12% 0.12%
B 870 870 0 0 0.00% 0.00%
C 878 877 0 0 0.00% 0.00%
D 728 728 0 0 0.00% 0.00%

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 5 56462 2583.98 96 94 21.8
A 1 162 2056 89.94 96 94 21.8
A 0 226 910 37.41 96 94 21.8
B 0 219 3623 154.43 104 101 22.8
B 0 197 3044 129.04 104 101 22.8
B 8 234 2327 97.6 104 101 22.8
C 9 68 6957 266.08 99 100 25.8
C 12 4 1995 73.53 99 100 25.8
C 13 61 753 25.34 99 100 25.8
D 8 195 63615 2814.22 83 81 22.6
D 1 52 51179 2263.37 83 81 22.6
D 7 71 8214 360.25 83 81 22.6

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