ASTROSAT CZTI

Data Quality Report

Orbit 26952

Creation date: 2024-06-27T19:34:52.004701
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/AS1A09_134T01_9000003896_26952cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26952cztM0_level2_quad_clean.evt
Size (bytes)683,032,32075,888,000
Size651.4 MB 72.4 MB
Events in quadrant A3,566,330479,632
Events in quadrant B7,817,715441,871
Events in quadrant C3,578,649480,598
Events in quadrant D5,291,580449,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142670
B0276440
C0143050
D0199380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391641.001408%
B6391115718.103583%
C6391881.376936%
D63904056.338028%

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 7781 6392 28 28 0.36% 0.44%
B 7781 6391 702 702 9.02% 10.98%
C 7781 6392 2 2 0.03% 0.03%
D 7779 6389 369 369 4.74% 5.78%

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 14 235 105804 601.48 876 864 174.5
A 8 192 51650 291.09 876 864 174.5
A 0 13 31662 176.52 876 864 174.5
B 0 189 4310752 27852.5 851 833 154.7
B 5 172 65240 416.22 851 833 154.7
B 15 33 49109 311.98 851 833 154.7
C 14 238 140333 710.18 860 871 196.4
C 2 16 51542 258.03 860 871 196.4
C 15 208 19238 93.53 860 871 196.4
D 1 52 1124476 5650.79 837 818 198.8
D 12 1 689006 3460.84 837 818 198.8
D 2 250 159110 796.04 837 818 198.8

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