ASTROSAT CZTI

Data Quality Report

Orbit 11231

Creation date: 2024-06-27T16:10:04.712073
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/AS1T01_200T01_9000001638_11231cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11231cztM0_level2_quad_clean.evt
Size (bytes)519,834,240120,067,200
Size495.8 MB 114.5 MB
Events in quadrant A3,640,714794,826
Events in quadrant B3,524,504828,395
Events in quadrant C2,944,990839,173
Events in quadrant D5,216,538745,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148163
B0146122
C0129712
D0197202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61361642.672751%
B61361302.118644%
C6136280.456323%
D613664510.511734%

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 7461 6137 106 106 1.42% 1.73%
B 7461 6136 63 63 0.84% 1.03%
C 7461 6137 14 14 0.19% 0.23%
D 7461 6137 572 572 7.67% 9.32%

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 8 5 685736 4807.39 713 700 142.5
A 14 238 43978 303.71 713 700 142.5
A 1 162 36045 248.04 713 700 142.5
B 4 239 505884 3746.19 730 712 134.8
B 3 189 83781 616.01 730 712 134.8
B 10 244 28486 205.96 730 712 134.8
C 4 254 119464 714.49 723 727 166.2
C 13 61 5290 27.46 723 727 166.2
C 14 128 3436 16.3 723 727 166.2
D 1 52 1943044 11866.62 680 661 163.7
D 8 195 324646 1979.33 680 661 163.7
D 13 104 118574 720.37 680 661 163.7

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