ASTROSAT CZTI

Data Quality Report

Orbit 38408

Creation date: 2024-06-27T21:52:21.775618
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_018T01_9000005386_38408cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38408cztM0_level2_quad_clean.evt
Size (bytes)341,035,20093,700,800
Size325.2 MB 89.4 MB
Events in quadrant A3,101,359624,116
Events in quadrant B2,859,499639,635
Events in quadrant C2,660,014616,213
Events in quadrant D3,564,495563,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127993
B0122982
C0114422
D0143272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5631761.349671%
B5631250.443971%
C563160.106553%
D56311242.202096%

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 7124 5632 48 48 0.67% 0.85%
B 7124 5632 9 9 0.13% 0.16%
C 7124 5632 3 3 0.04% 0.05%
D 7124 5632 98 98 1.38% 1.74%

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 402639 3218.67 614 600 124.9
A 13 248 119472 951.67 614 600 124.9
A 12 189 89887 714.82 614 600 124.9
B 0 155 107679 904.12 613 597 118.4
B 0 183 100285 841.69 613 597 118.4
B 4 171 91074 763.92 613 597 118.4
C 15 214 240682 1698.75 605 608 141.3
C 5 250 19633 134.62 605 608 141.3
C 0 10 17779 121.5 605 608 141.3
D 2 153 313459 2169.21 600 584 144.2
D 2 250 307748 2129.62 600 584 144.2
D 12 6 149983 1035.81 600 584 144.2

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