ASTROSAT CZTI

Data Quality Report

Orbit 30637

Creation date: 2024-06-27T20:17:59.931427
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/AS1A10_055T01_9000004414_30637cztM0_level2.evt modeM0/AS1A10_055T01_9000004414_30637cztM0_level2_quad_clean.evt
Size (bytes)622,707,84072,593,280
Size593.9 MB 69.2 MB
Events in quadrant A3,503,848474,516
Events in quadrant B4,371,809473,585
Events in quadrant C2,875,833453,021
Events in quadrant D7,721,848397,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143030
B0172170
C0122740
D0269850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57091733.030303%
B5710430.753065%
C5710500.875657%
D571085815.026270%

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 5709 5709 121 121 2.12% 2.12%
B 5710 5710 5 5 0.09% 0.09%
C 5710 5710 2 2 0.04% 0.04%
D 5710 5710 903 903 15.81% 15.81%

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 13 868084 6271.25 682 669 138.3
A 13 254 11408 77.64 682 669 138.3
A 3 137 6943 45.36 682 669 138.3
B 6 159 1631252 12352.05 680 663 132.0
B 0 229 16919 123.14 680 663 132.0
B 12 111 16173 117.49 680 663 132.0
C 3 233 109686 704.81 653 655 154.7
C 14 238 108531 697.34 653 655 154.7
C 15 208 73908 473.53 653 655 154.7
D 8 195 4533935 30203.68 627 608 150.1
D 10 253 405038 2694.55 627 608 150.1
D 12 227 165743 1100.22 627 608 150.1

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