ASTROSAT CZTI

Data Quality Report

Orbit 54718

Creation date: 2025-11-11T21:01:02.092166
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/AS1A14_103T01_9000006524_54718cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54718cztM0_level2_quad_clean.evt
Size (bytes)2,440,713,600468,832,320
Size2.3 GB 447.1 MB
Events in quadrant A17,395,4103,084,639
Events in quadrant B24,108,4473,240,094
Events in quadrant C21,847,2062,811,851
Events in quadrant D24,343,1922,701,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06880
B06880
C06880
D06880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0776106
B0957263
C0906383
D0971473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A343118902.593920%
B3431419725.746925%
C3431428068.177420%
D3431422246.481320%

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 51317 34315 576 576 1.12% 1.68%
B 51318 34318 1261 1261 2.46% 3.67%
C 51318 34319 1354 1354 2.64% 3.95%
D 51318 34319 1781 1781 3.47% 5.19%

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 7 14 1972686 2269.14 3507 3422 867.8
A 3 14 587016 672.46 3507 3422 867.8
A 0 8 575137 658.77 3507 3422 867.8
B 2 249 6450116 8874.59 3418 3289 726.4
B 7 0 2927391 4025.27 3418 3289 726.4
B 10 247 348402 475.08 3418 3289 726.4
C 15 219 4608499 5074.95 3312 3285 907.4
C 15 157 811996 891.2 3312 3285 907.4
C 3 248 527972 578.21 3312 3285 907.4
D 15 94 4654162 4913.52 3354 3217 946.6
D 11 129 2470744 2606.84 3354 3217 946.6
D 3 12 1877835 1980.45 3354 3217 946.6

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