ASTROSAT CZTI

Data Quality Report

Orbit 34036

Creation date: 2024-06-27T20:55:42.704429
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/AS1A06_003T04_9000004866_34036cztM0_level2.evt modeM0/AS1A06_003T04_9000004866_34036cztM0_level2_quad_clean.evt
Size (bytes)540,849,60077,866,560
Size515.8 MB 74.3 MB
Events in quadrant A2,708,771508,072
Events in quadrant B4,311,349491,113
Events in quadrant C4,020,925484,702
Events in quadrant D4,942,311464,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118712
B0166431
C0156911
D0186171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A585390.153767%
B58533495.962754%
C58531302.221083%
D58534788.166752%

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 7196 5854 3 3 0.04% 0.05%
B 7196 5854 258 258 3.59% 4.41%
C 7196 5854 100 100 1.39% 1.71%
D 7196 5854 459 459 6.38% 7.84%

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 0 31 25801 183.12 683 669 137.2
A 10 83 18871 132.63 683 669 137.2
A 13 6 16658 116.5 683 669 137.2
B 5 172 1102747 8613.41 663 646 128.0
B 0 189 180081 1402.36 663 646 128.0
B 15 85 123535 960.43 663 646 128.0
C 3 233 509898 3381.78 655 661 150.6
C 0 207 474312 3145.46 655 661 150.6
C 15 214 271144 1796.24 655 661 150.6
D 2 249 666108 4214.53 643 625 157.9
D 8 195 567340 3589.02 643 625 157.9
D 13 249 519773 3287.78 643 625 157.9

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