ASTROSAT CZTI

Data Quality Report

Orbit 40712

Creation date: 2024-06-27T22:19:29.405156
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/AS1A12_029T02_9000005558_40712cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40712cztM0_level2_quad_clean.evt
Size (bytes)443,534,40092,453,760
Size423.0 MB 88.2 MB
Events in quadrant A3,112,110636,599
Events in quadrant B2,779,750658,707
Events in quadrant C6,776,088564,551
Events in quadrant D3,291,517527,057

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126143
B0122412
C0241692
D0135752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5897140.237409%
B5897310.525691%
C589785014.414109%
D58975749.733763%

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 7210 5898 3 3 0.04% 0.05%
B 7210 5898 18 18 0.25% 0.31%
C 7210 5898 848 848 11.76% 14.38%
D 7210 5898 54 54 0.75% 0.92%

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 524753 3879.09 656 642 135.1
A 12 189 40612 295.83 656 642 135.1
A 13 254 7761 52.69 656 642 135.1
B 5 255 112664 867.01 653 635 129.2
B 0 190 66097 506.62 653 635 129.2
B 3 112 20154 151.06 653 635 129.2
C 9 187 4150933 28959.85 608 610 143.3
C 15 214 244913 1704.68 608 610 143.3
C 5 10 4190 24.98 608 610 143.3
D 2 250 293634 1927.23 606 589 152.1
D 13 249 199352 1307.18 606 589 152.1
D 12 191 184598 1210.15 606 589 152.1

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