ASTROSAT CZTI

Data Quality Report

Orbit 24954

Creation date: 2024-06-27T19:11:53.728564
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/AS1T03_200T01_9000003654_24954cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24954cztM0_level2_quad_clean.evt
Size (bytes)495,054,720139,996,800
Size472.1 MB 133.5 MB
Events in quadrant A3,157,741964,971
Events in quadrant B3,404,923996,524
Events in quadrant C3,477,908940,732
Events in quadrant D4,517,842891,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134232
B0141532
C0143252
D0181482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6411170.265169%
B6411721.123070%
C6411971.513024%
D6411590.920293%

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 7781 6412 0 0 0.00% 0.00%
B 7781 6412 14 14 0.18% 0.22%
C 7781 6412 28 28 0.36% 0.44%
D 7781 6412 18 18 0.23% 0.28%

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 13 254 9782 55.33 817 802 162.3
A 11 208 7424 40.8 817 802 162.3
A 0 226 7221 39.55 817 802 162.3
B 4 80 74976 499.49 822 806 148.5
B 5 172 33815 222.3 822 806 148.5
B 3 64 26712 174.46 822 806 148.5
C 7 247 253198 1388.55 790 795 181.8
C 14 238 129081 705.74 790 795 181.8
C 3 233 9703 49.0 790 795 181.8
D 1 3 801200 4292.12 781 761 186.5
D 8 195 351339 1879.87 781 761 186.5
D 1 52 270325 1445.46 781 761 186.5

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