ASTROSAT CZTI

Data Quality Report

Orbit 49632

Creation date: 2024-12-03T16:05:33.415145
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/AS1T05_233T01_9000006438_49632cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49632cztM0_level2_quad_clean.evt
Size (bytes)1,084,224,96043,632,000
Size1.0 GB 41.6 MB
Events in quadrant A14,729,02681,777
Events in quadrant B3,779,844598,261
Events in quadrant C5,698,45313,761
Events in quadrant D15,457,322196,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478900
B0153970
C0211090
D0501050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60456045100.000000%
B60452243.705542%
C60466046100.000000%
D6046587997.237843%

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 6919 6044 5483 5483 79.25% 90.72%
B 6920 6046 119 119 1.72% 1.97%
C 6920 6045 913 913 13.19% 15.10%
D 6921 6046 5656 5656 81.72% 93.55%

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 99 8393145 214242.82 109 104 39.2
A 10 83 1752709 44737.42 109 104 39.2
A 3 130 1020474 26046.21 109 104 39.2
B 4 206 368958 2758.25 628 609 133.5
B 4 170 241186 1801.48 628 609 133.5
B 10 44 148256 1105.6 628 609 133.5
C 15 180 1749569 84142.36 32 30 20.8
C 15 181 1304078 62716.91 32 30 20.8
C 15 163 467577 22486.22 32 30 20.8
D 15 40 4840724 31802.14 271 246 152.2
D 7 60 1272019 8355.6 271 246 152.2
D 7 45 977989 6423.81 271 246 152.2

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