ASTROSAT CZTI

Data Quality Report

Orbit 26175

Creation date: 2024-06-27T19:25:41.641303
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_138T04_9000003776_26175cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26175cztM0_level2_quad_clean.evt
Size (bytes)525,784,32086,927,040
Size501.4 MB 82.9 MB
Events in quadrant A3,379,637542,705
Events in quadrant B3,486,322555,701
Events in quadrant C3,415,820532,843
Events in quadrant D5,166,712513,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144780
B0146680
C0145100
D0198070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69922313.303776%
B69922443.489703%
C69922453.504005%
D69926058.652746%

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 7122 6993 0 0 0.00% 0.00%
B 7122 6993 1 1 0.01% 0.01%
C 7121 6992 0 0 0.00% 0.00%
D 7122 6993 423 423 5.94% 6.05%

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 13 254 10759 56.23 873 855 176.1
A 3 137 8321 42.39 873 855 176.1
A 0 226 7497 37.71 873 855 176.1
B 0 230 82247 483.75 862 839 168.3
B 12 111 20941 119.45 862 839 168.3
B 11 111 18705 106.16 862 839 168.3
C 14 238 132298 662.14 836 839 198.5
C 3 233 16616 79.47 836 839 198.5
C 13 61 5593 23.95 836 839 198.5
D 1 52 1893411 9532.63 832 811 198.5
D 12 233 82723 412.57 832 811 198.5
D 2 234 35243 173.43 832 811 198.5

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