ASTROSAT CZTI

Data Quality Report

Orbit 26071

Creation date: 2024-06-27T19:24:29.460548
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_142T01_9000003766_26071cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26071cztM0_level2_quad_clean.evt
Size (bytes)483,425,280119,062,080
Size461.0 MB 113.5 MB
Events in quadrant A3,366,558809,319
Events in quadrant B3,575,974801,003
Events in quadrant C3,363,751759,663
Events in quadrant D3,877,411767,128

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140200
B0146440
C0139480
D0155680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6723951.413060%
B67231191.770043%
C67231111.651049%
D67231281.903912%

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 7803 6723 0 0 0.00% 0.00%
B 7803 6723 26 26 0.33% 0.39%
C 7803 6723 1 1 0.01% 0.01%
D 7803 6723 55 55 0.70% 0.82%

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 13379 72.9 870 853 171.8
A 0 226 7735 40.05 870 853 171.8
A 3 137 7347 37.79 870 853 171.8
B 5 172 152221 956.18 850 834 158.3
B 0 190 71939 449.11 850 834 158.3
B 12 111 18278 110.18 850 834 158.3
C 14 238 133213 701.65 819 825 188.7
C 3 233 16145 81.2 819 825 188.7
C 2 16 12916 64.08 819 825 188.7
D 1 52 424876 1976.53 842 821 214.5
D 12 233 96724 447.01 842 821 214.5
D 8 195 45938 210.29 842 821 214.5

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