ASTROSAT CZTI

Data Quality Report

Orbit 23056

Creation date: 2024-06-27T18:49:53.671310
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/AS1A07_054T01_9000003406_23056cztM0_level2.evt modeM0/AS1A07_054T01_9000003406_23056cztM0_level2_quad_clean.evt
Size (bytes)518,552,640128,168,640
Size494.5 MB 122.2 MB
Events in quadrant A3,100,395876,762
Events in quadrant B3,352,435902,006
Events in quadrant C3,358,620870,428
Events in quadrant D5,466,916794,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135352
B0141512
C0142562
D0206152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279250.398153%
B6279721.146679%
C62791121.783724%
D627964710.304189%

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 7559 6280 0 0 0.00% 0.00%
B 7559 6280 19 19 0.25% 0.30%
C 7559 6280 6 6 0.08% 0.10%
D 7559 6280 496 496 6.56% 7.90%

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 10524 61.1 802 787 159.4
A 0 226 6992 38.93 802 787 159.4
A 3 137 6582 36.36 802 787 159.4
B 4 216 69043 453.27 810 792 150.6
B 3 64 46930 306.41 810 792 150.6
B 0 219 20559 131.28 810 792 150.6
C 14 238 127264 699.26 792 799 180.9
C 10 22 63959 349.23 792 799 180.9
C 0 10 26091 139.85 792 799 180.9
D 13 172 1244618 6721.49 760 741 185.1
D 1 52 1024029 5529.5 760 741 185.1
D 13 153 104165 558.87 760 741 185.1

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