ASTROSAT CZTI

Data Quality Report

Orbit 43686

Creation date: 2024-06-27T22:54:31.766760
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/AS1A13_008T01_9000005898_43686cztM0_level2.fits modeM0/AS1A13_008T01_9000005898_43686cztM0_level2_quad_clean.evt
Size (bytes)1,033,113,600110,180,160
Size985.3 MB 105.1 MB
Events in quadrant A10,961,811774,991
Events in quadrant B3,955,117826,467
Events in quadrant C15,786,956520,249
Events in quadrant D6,966,206694,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377722
B0165532
C0520292
D0257842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7419132317.832592%
B74201421.913747%
C7420524070.619946%
D742084911.442049%

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 8934 7421 959 959 10.73% 12.92%
B 8935 7422 12 12 0.13% 0.16%
C 8935 7421 4399 4399 49.23% 59.28%
D 8935 7422 608 608 6.80% 8.19%

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 15 222 4935314 29011.42 821 803 170.1
A 14 63 1486663 8735.8 821 803 170.1
A 10 83 931377 5471.11 821 803 170.1
B 5 235 127003 731.0 864 839 172.6
B 0 200 120386 692.66 864 839 172.6
B 0 230 99137 569.54 864 839 172.6
C 15 142 9762485 72918.62 564 567 133.9
C 15 157 3240168 24198.86 564 567 133.9
C 3 233 351975 2624.91 564 567 133.9
D 5 235 683784 3279.02 810 785 208.3
D 1 52 479956 2300.46 810 785 208.3
D 7 80 326673 1564.56 810 785 208.3

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