ASTROSAT CZTI

Data Quality Report

Orbit 12941

Creation date: 2024-06-27T16:34:11.178446
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_115T02_9000001900_12941cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12941cztM0_level2_quad_clean.evt
Size (bytes)595,969,92064,958,400
Size568.4 MB 61.9 MB
Events in quadrant A3,946,495388,966
Events in quadrant B5,039,160352,858
Events in quadrant C3,337,770397,418
Events in quadrant D5,280,350369,024

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160023
B0189312
C0138312
D0198252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65721962.982349%
B657280412.233719%
C65721141.734632%
D657276611.655508%

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 7758 6574 19 19 0.24% 0.29%
B 7758 6574 473 473 6.10% 7.20%
C 7758 6574 0 0 0.00% 0.00%
D 7758 6574 559 559 7.21% 8.50%

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 15 239 312571 1758.24 879 862 177.3
A 1 162 82563 460.85 879 862 177.3
A 15 223 44026 243.47 879 862 177.3
B 4 239 1411794 9163.5 815 796 154.0
B 3 64 343217 2223.8 815 796 154.0
B 0 219 27652 174.41 815 796 154.0
C 4 112 6621 29.24 854 859 197.1
C 13 61 6107 26.63 854 859 197.1
C 3 202 2093 6.26 854 859 197.1
D 12 110 1152189 5904.54 820 799 195.0
D 10 157 687943 3523.8 820 799 195.0
D 1 52 242629 1240.15 820 799 195.0

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