ASTROSAT CZTI

Data Quality Report

Orbit 20160815_G05_218T05_9000000602_level2

Creation date: 2025-11-04T20:21:03.917076
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/AS1G05_218T05_9000000602cztM0_level2.fits modeM0/AS1G05_218T05_9000000602cztM0_level2_quad_clean.evt
Size (bytes)488,485,440443,335,680
Size465.9 MB 422.8 MB
Events in quadrant A2,960,1962,565,928
Events in quadrant B2,886,3742,640,604
Events in quadrant C2,708,7842,193,306
Events in quadrant D2,460,6122,252,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01169790
B01177550
C01877350
D01718330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497517383.161437%
B549755000.909504%
C54974870215.829301%
D5497328485.180725%

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 78490 54974 0 0 0.00% 0.00%
B 78490 54976 0 0 0.00% 0.00%
C 78490 54715 0 0 0.00% 0.00%
D 78490 54922 0 0 0.00% 0.00%

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 29 2970 11.27 770 718 199.8
A 7 110 2576 9.3 770 718 199.8
A 9 19 2331 8.07 770 718 199.8
B 2 9 2511 11.76 760 723 152.1
B 12 226 2109 9.11 760 723 152.1
B 5 128 2050 8.73 760 723 152.1
C 1 81 2080 7.35 714 661 193.0
C 1 80 2057 7.23 714 661 193.0
C 2 191 1877 6.3 714 661 193.0
D 11 82 1984 7.14 702 637 188.7
D 4 160 1851 6.43 702 637 188.7
D 3 14 1844 6.4 702 637 188.7

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