ASTROSAT CZTI

Data Quality Report

Orbit 34590

Creation date: 2022-02-20T07:57:41.994384
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/AS1A09_038T44_9000004948_34590cztM0_level2.evt modeM0/AS1A09_038T44_9000004948_34590cztM0_level2_quad_clean.evt
Size (bytes)611,798,400108,264,960
Size583.5 MB 103.2 MB
Events in quadrant A2,736,235748,235
Events in quadrant B3,661,050742,702
Events in quadrant C3,103,677734,465
Events in quadrant D8,622,523634,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122512
B0147622
C0129262
D0298532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5991180.300451%
B59911853.087965%
C5991390.650976%
D5991103317.242530%

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 7274 5992 6 6 0.08% 0.10%
B 7274 5992 114 114 1.57% 1.90%
C 7273 5991 34 34 0.47% 0.57%
D 7274 5992 871 871 11.97% 14.54%

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 48401 346.32 679 665 137.8
A 9 143 42710 305.03 679 665 137.8
A 13 6 11469 78.38 679 665 137.8
B 5 172 497856 3894.68 670 654 127.7
B 0 189 246432 1925.23 670 654 127.7
B 0 190 71731 556.76 670 654 127.7
C 15 214 252554 1637.96 656 661 153.8
C 0 207 139691 904.06 656 661 153.8
C 12 250 61255 394.02 656 661 153.8
D 8 195 4176176 26328.48 610 594 158.6
D 5 223 525377 3308.94 610 594 158.6
D 1 47 513258 3232.52 610 594 158.6

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