ASTROSAT CZTI

Data Quality Report

Orbit 38942

Creation date: 2024-06-27T21:58:27.166160
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_38942cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38942cztM0_level2_quad_clean.evt
Size (bytes)339,174,72086,008,320
Size323.5 MB 82.0 MB
Events in quadrant A2,679,220574,377
Events in quadrant B2,358,395591,801
Events in quadrant C2,331,677575,433
Events in quadrant D4,799,888514,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110833
B0104452
C0100022
D0177888

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4961280.564402%
B4961170.342673%
C496120.040314%
D49601783.588710%

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 6995 4962 25 25 0.36% 0.50%
B 6995 4962 11 11 0.16% 0.22%
C 6995 4962 0 0 0.00% 0.00%
D 6994 4961 211 211 3.02% 4.25%

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 389873 3530.11 543 532 110.3
A 15 222 146487 1323.36 543 532 110.3
A 13 248 32972 294.13 543 532 110.3
B 10 246 127133 1225.77 545 530 103.3
B 5 172 39242 374.81 545 530 103.3
B 0 230 26873 255.05 545 530 103.3
C 15 214 204976 1619.34 541 544 126.2
C 0 10 9101 67.78 541 544 126.2
C 5 237 5511 39.34 541 544 126.2
D 12 227 1025719 7949.14 526 510 129.0
D 12 235 983486 7621.68 526 510 129.0
D 12 6 251575 1946.68 526 510 129.0

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