ASTROSAT CZTI

Data Quality Report

Orbit 37100

Creation date: 2024-06-27T21:35:32.357209
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_138T04_9000005282_37100cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37100cztM0_level2_quad_clean.evt
Size (bytes)452,099,52058,371,840
Size431.2 MB 55.7 MB
Events in quadrant A3,017,847360,064
Events in quadrant B3,075,641361,129
Events in quadrant C2,871,224345,019
Events in quadrant D4,364,351326,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120713
B0122432
C0114092
D0166812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5344160.299401%
B5344410.767216%
C5344130.243263%
D53442083.892216%

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 7377 5345 9 9 0.12% 0.17%
B 7377 5345 25 25 0.34% 0.47%
C 7377 5345 10 10 0.14% 0.19%
D 7377 5345 197 197 2.67% 3.69%

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 268403 1939.71 691 680 138.0
A 7 3 46471 331.77 691 680 138.0
A 13 6 12188 83.38 691 680 138.0
B 5 255 96833 752.67 676 661 127.8
B 5 172 95498 742.22 676 661 127.8
B 5 184 79302 615.47 676 661 127.8
C 15 214 230651 1527.04 652 657 150.6
C 0 10 77467 509.98 652 657 150.6
C 0 207 8949 55.05 652 657 150.6
D 1 52 613636 3875.19 659 643 158.2
D 12 235 290604 1833.06 659 643 158.2
D 2 249 236944 1493.84 659 643 158.2

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