ASTROSAT CZTI

Data Quality Report

Orbit 42841

Creation date: 2024-06-27T22:44:53.939583
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_138T01_9000005828_42841cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42841cztM0_level2_quad_clean.evt
Size (bytes)446,155,20091,255,680
Size425.5 MB 87.0 MB
Events in quadrant A3,461,365613,900
Events in quadrant B2,719,250635,403
Events in quadrant C3,704,395617,596
Events in quadrant D6,182,239492,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138722
B0121322
C0147222
D0223412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5766480.832466%
B5766350.607007%
C57661001.734305%
D576693116.146375%

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 7168 5767 33 33 0.46% 0.57%
B 7168 5767 10 10 0.14% 0.17%
C 7168 5767 105 105 1.46% 1.82%
D 7168 5767 862 862 12.03% 14.95%

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 10 83 605077 4684.21 622 608 129.0
A 15 237 185562 1433.26 622 608 129.0
A 15 222 153975 1188.49 622 608 129.0
B 4 171 127710 1040.98 621 602 122.1
B 15 85 50228 406.42 621 602 122.1
B 5 255 42030 339.28 621 602 122.1
C 7 220 610104 4231.41 611 614 144.0
C 14 254 402915 2792.99 611 614 144.0
C 15 214 234887 1626.45 611 614 144.0
D 1 52 3102785 22209.43 568 550 139.7
D 13 171 268913 1921.26 568 550 139.7
D 12 233 232410 1659.93 568 550 139.7

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