ASTROSAT CZTI

Data Quality Report

Orbit 21750

Creation date: 2024-06-27T18:31:47.353058
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_005T01_9000003224_21750cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21750cztM0_level2_quad_clean.evt
Size (bytes)3,191,636,160343,431,360
Size3.0 GB 327.5 MB
Events in quadrant A15,161,0532,171,182
Events in quadrant B16,355,4652,224,456
Events in quadrant C14,758,4412,117,117
Events in quadrant D48,289,9471,747,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0648875
B0678165
C0635955
D016489610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06320
B06320
C06320
D06320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A311183501.124751%
B311195281.696713%
C311194581.471770%
D311181248240.111832%

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 37992 31123 19 19 0.05% 0.06%
B 37993 31123 88 88 0.23% 0.28%
C 37993 31125 0 0 0.00% 0.00%
D 37993 31120 10121 10121 26.64% 32.52%

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 15 236 269443 350.96 3780 3695 757.2
A 13 170 172977 223.57 3780 3695 757.2
A 4 2 100625 128.01 3780 3695 757.2
B 3 64 622790 866.6 3776 3680 714.4
B 0 230 230168 317.03 3776 3680 714.4
B 0 190 228986 315.37 3776 3680 714.4
C 14 238 564416 657.44 3637 3653 852.9
C 13 61 25830 26.0 3637 3653 852.9
C 8 128 12643 10.54 3637 3653 852.9
D 7 238 30933233 40056.6 3165 3075 772.2
D 1 52 2905299 3758.57 3165 3075 772.2
D 12 235 1035548 1337.12 3165 3075 772.2

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