ASTROSAT CZTI

Data Quality Report

Orbit 23135

Creation date: 2024-06-27T18:50:20.994648
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/AS1T03_173T01_9000003416_23135cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23135cztM0_level2_quad_clean.evt
Size (bytes)603,264,960133,905,600
Size575.3 MB 127.7 MB
Events in quadrant A3,790,823887,061
Events in quadrant B3,900,686906,620
Events in quadrant C3,896,695871,479
Events in quadrant D6,130,794826,011

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169491
B0171341
C0170221
D0238791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81172042.513244%
B81172713.338672%
C81181932.377433%
D81187399.103227%

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 8562 8120 0 0 0.00% 0.00%
B 8562 8120 2 2 0.02% 0.02%
C 8563 8121 0 0 0.00% 0.00%
D 8563 8121 556 556 6.49% 6.85%

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 6 16 26688 129.35 976 952 199.0
A 13 254 12108 56.07 976 952 199.0
A 3 137 9070 40.8 976 952 199.0
B 12 111 23383 118.97 978 948 188.6
B 11 111 20510 103.74 978 948 188.6
B 14 111 18289 91.96 978 948 188.6
C 14 238 147236 668.75 937 943 218.8
C 8 208 38581 172.05 937 943 218.8
C 0 207 25534 112.41 937 943 218.8
D 1 52 1212282 5425.42 921 892 223.3
D 1 239 1010792 4523.01 921 892 223.3
D 10 103 272472 1216.32 921 892 223.3

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