ASTROSAT CZTI

Data Quality Report

Orbit 24392

Creation date: 2024-06-27T19:05:30.895878
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/AS1A08_008T01_9000003596_24392cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24392cztM0_level2_quad_clean.evt
Size (bytes)675,996,48087,137,280
Size644.7 MB 83.1 MB
Events in quadrant A3,326,753562,934
Events in quadrant B3,305,758578,222
Events in quadrant C7,071,643527,607
Events in quadrant D6,315,300501,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140902
B0139602
C0258872
D0232872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709190.283202%
B6709350.521687%
C67093965.902519%
D670987313.012371%

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 7804 6710 3 3 0.04% 0.04%
B 7804 6710 5 5 0.06% 0.07%
C 7804 6710 65 65 0.83% 0.97%
D 7804 6710 720 720 9.23% 10.73%

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 6 10 172715 1057.52 818 802 162.6
A 13 254 10465 59.44 818 802 162.6
A 0 226 7062 38.51 818 802 162.6
B 15 33 48982 315.35 820 798 152.8
B 4 52 20471 128.76 820 798 152.8
B 12 111 18357 114.92 820 798 152.8
C 7 247 3878999 21797.17 780 787 177.9
C 14 238 125840 702.85 780 787 177.9
C 3 233 15134 80.64 780 787 177.9
D 1 52 3251180 17762.54 760 736 183.0
D 12 233 129429 703.26 760 736 183.0
D 2 234 29547 157.44 760 736 183.0

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