ASTROSAT CZTI

Data Quality Report

Orbit 37757

Creation date: 2024-06-27T21:44:03.042578
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/AS1A11_106T02_9000005344_37757cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37757cztM0_level2_quad_clean.evt
Size (bytes)484,413,12089,628,480
Size462.0 MB 85.5 MB
Events in quadrant A3,105,890585,874
Events in quadrant B3,258,304578,265
Events in quadrant C3,786,475592,607
Events in quadrant D4,126,546552,107

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129963
B0136782
C0151182
D0163622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5796360.621118%
B57961763.036577%
C5796601.035197%
D57963455.952381%

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 7139 5797 28 28 0.39% 0.48%
B 7139 5797 146 146 2.05% 2.52%
C 7139 5797 52 52 0.73% 0.90%
D 7139 5797 364 364 5.10% 6.28%

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 351604 2687.16 642 629 130.6
A 15 254 180323 1375.79 642 629 130.6
A 9 143 46646 352.32 642 629 130.6
B 4 81 406355 3342.1 631 615 121.4
B 5 255 129695 1063.24 631 615 121.4
B 0 229 59167 482.3 631 615 121.4
C 0 207 894936 6153.32 625 629 145.3
C 15 214 244228 1676.09 625 629 145.3
C 0 10 150615 1031.99 625 629 145.3
D 2 250 1114017 7424.98 614 597 150.0
D 7 223 162849 1082.0 614 597 150.0
D 2 249 111575 740.07 614 597 150.0

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