ASTROSAT CZTI

Data Quality Report

Orbit 37445

Creation date: 2024-06-27T21:40:03.893733
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_002T01_9000005322_37445cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37445cztM0_level2_quad_clean.evt
Size (bytes)826,119,36069,140,160
Size787.8 MB 65.9 MB
Events in quadrant A8,738,245432,823
Events in quadrant B8,811,495335,703
Events in quadrant C3,266,571484,775
Events in quadrant D3,836,249457,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297203
B0299022
C0131002
D0152372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5440205237.720588%
B5440253846.654412%
C54401693.106618%
D54402013.694853%

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 7173 5440 1861 1861 25.94% 34.21%
B 7173 5440 2273 2273 31.69% 41.78%
C 7173 5441 158 158 2.20% 2.90%
D 7173 5441 221 221 3.08% 4.06%

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 5931983 53076.91 560 549 111.8
A 5 168 283701 2533.76 560 549 111.8
A 10 83 269254 2404.48 560 549 111.8
B 15 35 5438563 64521.05 437 427 84.3
B 4 171 1055856 12522.19 437 427 84.3
B 0 189 404471 4793.8 437 427 84.3
C 14 254 479595 3496.92 589 593 137.0
C 15 214 245313 1786.56 589 593 137.0
C 0 10 233264 1698.6 589 593 137.0
D 12 235 531337 3749.68 586 570 141.5
D 2 153 365298 2576.68 586 570 141.5
D 13 249 327410 2309.01 586 570 141.5

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