ASTROSAT CZTI

Data Quality Report

Orbit 04258

Creation date: 2024-06-27T14:39:27.900744
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_240T01_9000000536_04258cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04258cztM0_level2_quad_clean.evt
Size (bytes)544,841,28062,979,840
Size519.6 MB 60.1 MB
Events in quadrant A3,474,212365,176
Events in quadrant B4,864,878361,128
Events in quadrant C3,197,435352,426
Events in quadrant D4,492,359343,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148083
B0192402
C0143702
D0183292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69531351.941608%
B69533024.343449%
C6953680.977995%
D69531792.574428%

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 7683 6953 0 0 0.00% 0.00%
B 7683 6953 102 102 1.33% 1.47%
C 7683 6954 1 1 0.01% 0.01%
D 7683 6954 90 90 1.17% 1.29%

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 14 111 100166 581.49 834 817 170.9
A 0 149 71550 414.0 834 817 170.9
A 8 15 44400 255.09 834 817 170.9
B 3 0 787380 4902.42 834 815 160.4
B 5 184 676812 4213.28 834 815 160.4
B 14 167 64784 398.7 834 815 160.4
C 9 144 57570 300.44 799 802 189.0
C 10 65 14033 70.02 799 802 189.0
C 13 61 6528 30.3 799 802 189.0
D 2 232 389563 1986.43 797 774 195.7
D 9 85 346497 1766.4 797 774 195.7
D 11 132 197447 1004.86 797 774 195.7

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