ASTROSAT CZTI

Data Quality Report

Orbit 41158

Creation date: 2024-06-27T22:25:12.254703
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/AS1A12_025T14_9000005606_41158cztM0_level2.fits modeM0/AS1A12_025T14_9000005606_41158cztM0_level2_quad_clean.evt
Size (bytes)262,990,08063,299,520
Size250.8 MB 60.4 MB
Events in quadrant A1,921,545432,499
Events in quadrant B2,291,902437,456
Events in quadrant C2,077,023405,851
Events in quadrant D3,160,744383,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078561
B092161
C084021
D0119081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363760.164971%
B3637611.677206%
C3637691.897168%
D3637411.127303%

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 3637 3637 1 1 0.03% 0.03%
B 3637 3637 56 56 1.54% 1.54%
C 3637 3637 59 59 1.62% 1.62%
D 3637 3637 47 47 1.29% 1.29%

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 323761 3776.54 412 404 85.6
A 13 254 6724 73.81 412 404 85.6
A 3 137 4326 45.81 412 404 85.6
B 0 245 347890 4395.68 402 390 79.1
B 7 202 334592 4227.47 402 390 79.1
B 0 190 15793 194.84 402 390 79.1
C 9 54 231737 2482.79 395 397 93.2
C 15 214 154926 1658.44 395 397 93.2
C 0 10 127190 1360.77 395 397 93.2
D 2 16 1394280 14084.21 399 388 99.0
D 5 32 71533 718.87 399 388 99.0
D 13 249 52882 530.41 399 388 99.0

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