ASTROSAT CZTI

Data Quality Report

Orbit 33659

Creation date: 2024-06-27T20:51:12.452258
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/AS1T04_076T01_9000004810_33659cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33659cztM0_level2_quad_clean.evt
Size (bytes)580,953,60077,051,520
Size554.0 MB 73.5 MB
Events in quadrant A4,106,885477,477
Events in quadrant B5,084,722482,239
Events in quadrant C3,563,427490,252
Events in quadrant D4,433,962464,838

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162193
B0190752
C0144822
D0173552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59922103.504673%
B599285414.252336%
C5992911.518692%
D59921692.820427%

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 7423 5993 184 184 2.48% 3.07%
B 7423 5992 673 673 9.07% 11.23%
C 7423 5993 74 74 1.00% 1.23%
D 7423 5992 155 155 2.09% 2.59%

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 15 169 934495 6692.56 687 674 139.5
A 15 237 432353 3093.78 687 674 139.5
A 15 253 28898 202.28 687 674 139.5
B 5 172 2193626 17661.49 649 631 124.2
B 15 222 133552 1070.49 649 631 124.2
B 15 201 51938 413.21 649 631 124.2
C 3 233 409357 2612.39 675 681 156.4
C 15 214 278970 1778.91 675 681 156.4
C 0 10 204643 1303.79 675 681 156.4
D 8 195 915349 5232.1 668 656 174.8
D 12 6 226602 1292.43 668 656 174.8
D 2 250 213410 1216.97 668 656 174.8

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