ASTROSAT CZTI

Data Quality Report

Orbit 18556

Creation date: 2024-06-27T17:51:32.061038
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/AS1A05_188T01_9000002756_18556cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18556cztM0_level2_quad_clean.evt
Size (bytes)450,417,60099,904,320
Size429.6 MB 95.3 MB
Events in quadrant A3,110,823663,792
Events in quadrant B3,357,444690,113
Events in quadrant C3,080,186631,589
Events in quadrant D3,673,560609,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132132
B0138122
C0130282
D0152397

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174360.583090%
B6174621.004211%
C6174530.858439%
D61731412.284141%

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 7539 6175 0 0 0.00% 0.00%
B 7539 6175 18 18 0.24% 0.29%
C 7539 6175 0 0 0.00% 0.00%
D 7538 6174 109 109 1.45% 1.77%

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 11262 65.21 804 791 160.6
A 0 226 6910 38.1 804 791 160.6
A 3 137 5821 31.32 804 791 160.6
B 3 64 75047 486.32 811 793 152.7
B 15 222 73151 473.91 811 793 152.7
B 4 80 22203 140.22 811 793 152.7
C 14 238 120997 678.71 759 763 177.2
C 13 61 5450 26.45 759 763 177.2
C 3 233 2117 7.64 759 763 177.2
D 7 238 536459 2936.45 756 735 182.4
D 1 52 214585 1172.17 756 735 182.4
D 7 38 30512 163.22 756 735 182.4

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