ASTROSAT CZTI

Data Quality Report

Orbit 41693

Creation date: 2024-06-27T22:31:40.441652
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_035T02_9000005690_41693cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41693cztM0_level2_quad_clean.evt
Size (bytes)339,114,24086,639,040
Size323.4 MB 82.6 MB
Events in quadrant A2,768,280605,352
Events in quadrant B2,638,309610,515
Events in quadrant C2,754,457554,223
Events in quadrant D4,011,428510,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111305
B0110165
C0111066
D01523912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4883170.348147%
B4882450.921753%
C48811753.585331%
D48783547.257073%

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 7039 4885 6 6 0.09% 0.12%
B 7039 4886 23 23 0.33% 0.47%
C 7039 4886 176 176 2.50% 3.60%
D 7039 4883 367 367 5.21% 7.52%

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 10 83 533665 4671.35 569 560 114.1
A 13 254 7493 60.75 569 560 114.1
A 15 223 6480 51.87 569 560 114.1
B 0 190 207757 1923.31 564 549 107.7
B 5 255 81652 752.8 564 549 107.7
B 4 141 71794 661.29 564 549 107.7
C 0 10 438137 3514.49 538 542 124.5
C 15 214 197925 1585.26 538 542 124.5
C 15 111 13030 100.3 538 542 124.5
D 2 249 890014 6835.9 535 520 130.1
D 13 249 779445 5986.16 535 520 130.1
D 2 120 222868 1708.78 535 520 130.1

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