ASTROSAT CZTI

Data Quality Report

Orbit 13955

Creation date: 2024-06-27T16:48:26.358528
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/AS1A04_225T01_9000002062_13955cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13955cztM0_level2_quad_clean.evt
Size (bytes)473,544,00096,678,720
Size451.6 MB 92.2 MB
Events in quadrant A3,057,947618,151
Events in quadrant B3,302,999648,466
Events in quadrant C3,191,834628,956
Events in quadrant D4,350,464582,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133453
B0140152
C0134212
D0172332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6449290.449682%
B6449761.178477%
C6449200.310126%
D6449931.442084%

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 7470 6451 5 5 0.07% 0.08%
B 7470 6451 37 37 0.50% 0.57%
C 7470 6451 0 0 0.00% 0.00%
D 7470 6451 86 86 1.15% 1.33%

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 1 162 20076 122.94 770 754 157.2
A 12 189 17455 106.26 770 754 157.2
A 15 69 17312 105.35 770 754 157.2
B 0 229 102470 689.74 783 763 147.5
B 0 189 37907 251.9 783 763 147.5
B 3 209 37317 247.9 783 763 147.5
C 3 233 212248 1197.19 764 768 176.6
C 13 61 5472 26.63 764 768 176.6
C 3 202 1793 5.8 764 768 176.6
D 13 122 817549 4165.54 741 726 196.1
D 1 52 227997 1159.01 741 726 196.1
D 8 195 173297 880.06 741 726 196.1

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