ASTROSAT CZTI

Data Quality Report

Orbit 12619

Creation date: 2024-06-27T16:30:04.084893
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/AS1G08_071T01_9000001874_12619cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12619cztM0_level2_quad_clean.evt
Size (bytes)532,468,80079,882,560
Size507.8 MB 76.2 MB
Events in quadrant A3,254,061505,223
Events in quadrant B4,212,648491,800
Events in quadrant C3,642,421497,613
Events in quadrant D4,588,380483,473

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138772
B0169541
C0151081
D0180821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63131272.011722%
B63134116.510375%
C63132554.039284%
D63133435.433233%

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 8585 6314 4 4 0.05% 0.06%
B 8584 6313 217 217 2.53% 3.44%
C 8585 6314 176 176 2.05% 2.79%
D 8585 6314 188 188 2.19% 2.98%

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 3 1 87274 527.78 809 792 163.9
A 12 189 51603 310.09 809 792 163.9
A 0 226 7122 38.63 809 792 163.9
B 4 239 771651 5158.97 793 775 149.4
B 3 64 114235 759.31 793 775 149.4
B 0 230 89870 596.26 793 775 149.4
C 15 208 576195 3184.13 786 790 180.7
C 13 61 5702 27.18 786 790 180.7
C 14 234 2394 8.88 786 790 180.7
D 1 52 831876 4452.11 780 759 186.7
D 10 157 587428 3142.66 780 759 186.7
D 10 199 104603 556.27 780 759 186.7

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