ASTROSAT CZTI

Data Quality Report

Orbit 25799

Creation date: 2024-06-27T19:21:34.310213
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/AS1A07_068T01_9000003756_25799cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25799cztM0_level2_quad_clean.evt
Size (bytes)524,736,00076,913,280
Size500.4 MB 73.4 MB
Events in quadrant A4,604,485461,507
Events in quadrant B3,411,196474,485
Events in quadrant C3,366,065452,155
Events in quadrant D4,032,741451,155

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182180
B0145630
C0145770
D0164370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70303935.590327%
B70311401.991182%
C70311712.432086%
D70311281.820509%

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 7245 7030 250 250 3.45% 3.56%
B 7246 7031 1 1 0.01% 0.01%
C 7246 7031 0 0 0.00% 0.00%
D 7246 7031 3 3 0.04% 0.04%

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 0 13 1340618 7819.19 846 829 171.3
A 13 254 9829 52.53 846 829 171.3
A 3 137 8149 42.72 846 829 171.3
B 12 111 20904 119.29 856 834 168.2
B 4 171 20795 118.65 856 834 168.2
B 11 111 18456 104.74 856 834 168.2
C 14 238 128347 656.09 821 825 194.4
C 3 233 43465 219.38 821 825 194.4
C 13 61 5606 24.6 821 825 194.4
D 8 195 363859 1815.83 829 810 199.9
D 7 80 310179 1547.35 829 810 199.9
D 1 52 210189 1047.23 829 810 199.9

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