ASTROSAT CZTI

Data Quality Report

Orbit 29143

Creation date: 2024-06-27T20:00:46.142653
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/AS1A10_099T01_9000004184_29143cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29143cztM0_level2_quad_clean.evt
Size (bytes)636,099,840120,712,320
Size606.6 MB 115.1 MB
Events in quadrant A4,217,701774,630
Events in quadrant B4,335,564792,610
Events in quadrant C4,382,796754,880
Events in quadrant D5,741,212732,421

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181692
B0184572
C0184762
D0230382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86501001.156069%
B86501591.838150%
C86502192.531792%
D86513123.606519%

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 9035 8652 0 0 0.00% 0.00%
B 9035 8652 1 1 0.01% 0.01%
C 9035 8652 0 0 0.00% 0.00%
D 9036 8653 188 188 2.08% 2.17%

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 14969 62.66 1088 1064 221.9
A 11 29 12747 52.65 1088 1064 221.9
A 3 137 11228 45.8 1088 1064 221.9
B 0 183 36725 169.39 1081 1051 210.6
B 10 246 30025 137.58 1081 1051 210.6
B 12 111 27451 125.35 1081 1051 210.6
C 14 238 167134 665.61 1048 1052 249.5
C 3 233 112257 445.68 1048 1052 249.5
C 2 114 20697 78.73 1048 1052 249.5
D 1 52 1193425 4746.9 1042 1012 251.2
D 8 195 479665 1905.48 1042 1012 251.2
D 2 120 57986 226.81 1042 1012 251.2

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