ASTROSAT CZTI

Data Quality Report

Orbit 43950

Creation date: 2024-06-27T22:57:33.813546
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/AS1A13_025T01_9000005920_43950cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43950cztM0_level2_quad_clean.evt
Size (bytes)486,843,840108,328,320
Size464.3 MB 103.3 MB
Events in quadrant A5,701,841717,286
Events in quadrant B3,912,563737,444
Events in quadrant C3,194,105723,864
Events in quadrant D4,706,633646,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215382
B0160812
C0140182
D0185042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65272233.416577%
B65271963.002911%
C6527410.628160%
D65271902.910985%

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 7647 6528 137 137 1.79% 2.10%
B 7647 6528 130 130 1.70% 1.99%
C 7647 6528 21 21 0.27% 0.32%
D 7647 6528 168 168 2.20% 2.57%

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 1241631 8338.13 721 706 148.8
A 15 222 1235432 8296.48 721 706 148.8
A 15 223 380759 2553.68 721 706 148.8
B 5 235 490211 3469.97 722 701 141.1
B 4 171 142687 1006.49 722 701 141.1
B 0 200 111754 787.22 722 701 141.1
C 14 254 145288 855.01 719 722 169.1
C 3 233 128549 756.01 719 722 169.1
C 1 241 86394 506.69 719 722 169.1
D 5 235 614495 3422.68 706 685 179.3
D 4 235 295223 1642.38 706 685 179.3
D 12 17 193549 1075.43 706 685 179.3

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