ASTROSAT CZTI

Data Quality Report

Orbit 08976

Creation date: 2024-06-27T15:39:49.732567
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/AS1A03_107T01_9000001246_08976cztM0_level2.evt modeM0/AS1A03_107T01_9000001246_08976cztM0_level2_quad_clean.evt
Size (bytes)743,322,24069,960,960
Size708.9 MB 66.7 MB
Events in quadrant A4,626,623432,906
Events in quadrant B6,952,109435,402
Events in quadrant C5,374,096398,378
Events in quadrant D5,108,783386,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01792718
B02531756
C02044845
D01966739

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66634056.078343%
B6657105715.878023%
C665867710.168219%
D66625738.601021%

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 7617 6667 220 220 2.89% 3.30%
B 7617 6667 553 553 7.26% 8.29%
C 7617 6667 425 425 5.58% 6.37%
D 7617 6668 502 502 6.59% 7.53%

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 5 16 715620 4404.9 802 786 162.3
A 8 5 468883 2884.48 802 786 162.3
A 13 251 331151 2035.75 802 786 162.3
B 0 85 3795535 25152.41 793 774 150.9
B 0 214 59775 391.07 793 774 150.9
B 12 111 15114 95.05 793 774 150.9
C 4 254 2408757 13685.4 758 761 176.0
C 4 238 8545 44.24 758 761 176.0
C 13 61 5803 28.66 758 761 176.0
D 1 52 971044 5110.43 770 747 189.9
D 12 233 526028 2766.59 770 747 189.9
D 13 29 429670 2259.08 770 747 189.9

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