ASTROSAT CZTI

Data Quality Report

Orbit 49651

Creation date: 2024-12-04T11:42:52.156388
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_233T01_9000006438_49651cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49651cztM0_level2_quad_clean.evt
Size (bytes)1,116,486,72035,124,480
Size1.0 GB 33.5 MB
Events in quadrant A14,700,45123,826
Events in quadrant B4,670,277601,115
Events in quadrant C7,470,5771,910
Events in quadrant D14,030,84525,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0477241
B0178111
C0264591
D0456911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5888574897.622283%
B58895499.322466%
C5889587599.762269%
D5889568296.484972%

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 6952 5887 5590 5590 80.41% 94.95%
B 6954 5889 338 338 4.86% 5.74%
C 6953 5888 631 631 9.08% 10.72%
D 6953 5888 5112 5112 73.52% 86.82%

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 4599681 51789.24 320 311 88.8
A 0 99 3671318 41335.8 320 311 88.8
A 6 35 782523 8807.76 320 311 88.8
B 4 206 570131 4254.83 635 614 133.9
B 7 0 446385 3330.33 635 614 133.9
B 3 232 255416 1903.61 635 614 133.9
C 15 180 2446291 135646.31 36 35 18.0
C 15 219 1742381 96614.1 36 35 18.0
C 15 163 549898 30490.22 36 35 18.0
D 15 40 3578098 44758.75 191 179 79.9
D 7 45 2452680 30680.09 191 179 79.9
D 4 99 1151656 14404.65 191 179 79.9

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