ASTROSAT CZTI

Data Quality Report

Orbit 46620

Creation date: 2024-06-27T23:25:27.957510
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/AS1A13_080T01_9000006240_46620cztM0_level2.fits modeM0/AS1A13_080T01_9000006240_46620cztM0_level2_quad_clean.evt
Size (bytes)570,153,600105,586,560
Size543.7 MB 100.7 MB
Events in quadrant A5,416,022771,730
Events in quadrant B6,847,220560,122
Events in quadrant C2,578,537749,587
Events in quadrant D5,828,678723,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196521
B0243431
C0122891
D02122710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56112985.310996%
B5611156127.820353%
C5611390.695063%
D560970112.497771%

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 6531 5612 109 109 1.67% 1.94%
B 6531 5612 1188 1188 18.19% 21.17%
C 6531 5612 10 10 0.15% 0.18%
D 6532 5611 715 715 10.95% 12.74%

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 10 83 2642998 18542.02 662 651 142.5
A 9 191 113226 789.97 662 651 142.5
A 0 247 30464 209.21 662 651 142.5
B 12 3 4228520 38069.81 557 542 111.1
B 0 189 145096 1301.6 557 542 111.1
B 15 201 127699 1144.95 557 542 111.1
C 14 254 65900 422.97 629 632 154.3
C 3 233 20687 129.97 629 632 154.3
C 12 250 14247 88.23 629 632 154.3
D 12 218 1714827 10014.39 644 624 171.2
D 1 52 551325 3217.2 644 624 171.2
D 12 128 481815 2811.12 644 624 171.2

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