ASTROSAT CZTI

Data Quality Report

Orbit 38923

Creation date: 2024-06-27T21:58:12.049442
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/AS1T05_064T01_9000005416_38923cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38923cztM0_level2_quad_clean.evt
Size (bytes)405,264,96093,551,040
Size386.5 MB 89.2 MB
Events in quadrant A3,687,490648,035
Events in quadrant B2,524,289656,793
Events in quadrant C2,555,603631,227
Events in quadrant D5,822,486525,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144632
B0110491
C0107931
D0209891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5296430.811934%
B5296150.283233%
C529630.056647%
D529671713.538520%

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 7179 5297 30 30 0.42% 0.57%
B 7179 5297 11 11 0.15% 0.21%
C 7179 5297 1 1 0.01% 0.02%
D 7179 5297 663 663 9.24% 12.52%

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 12 16 418611 3454.79 601 589 121.0
A 10 83 393964 3251.09 601 589 121.0
A 15 222 243729 2009.46 601 589 121.0
B 5 200 80988 714.46 598 583 112.5
B 0 230 20857 180.15 598 583 112.5
B 5 172 19470 167.83 598 583 112.5
C 15 214 216072 1576.46 594 599 136.7
C 0 207 8060 54.59 594 599 136.7
C 12 249 5250 34.03 594 599 136.7
D 12 227 1136981 8426.28 560 545 134.9
D 1 52 608565 4508.26 560 545 134.9
D 2 250 520771 3857.29 560 545 134.9

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