ASTROSAT CZTI

Data Quality Report

Orbit 40621

Creation date: 2024-06-27T22:18:19.729654
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_011T59_9000005552_40621cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40621cztM0_level2_quad_clean.evt
Size (bytes)753,929,280203,106,240
Size719.0 MB 193.7 MB
Events in quadrant A6,574,6701,438,147
Events in quadrant B6,718,5811,481,394
Events in quadrant C6,006,3431,400,456
Events in quadrant D7,641,476970,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265694
B0278393
C0254953
D0312263

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12430190.152856%
B124301110.893001%
C12430160.128721%
D12430338627.240547%

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 18708 12433 10 10 0.05% 0.08%
B 18708 12433 60 60 0.32% 0.48%
C 18708 12433 13 13 0.07% 0.10%
D 18708 12432 195 195 1.04% 1.57%

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 989588 3527.56 1397 1374 280.1
A 2 79 93692 329.54 1397 1374 280.1
A 12 189 70580 247.04 1397 1374 280.1
B 0 229 375793 1453.85 1378 1341 257.6
B 3 112 277625 1072.7 1378 1341 257.6
B 0 190 249005 961.58 1378 1341 257.6
C 15 214 530764 1718.69 1341 1345 308.0
C 9 187 148026 476.18 1341 1345 308.0
C 0 10 48528 153.17 1341 1345 308.0
D 12 227 1267444 4426.06 1181 1145 286.1
D 12 191 687640 2399.49 1181 1145 286.1
D 12 79 482929 1683.97 1181 1145 286.1

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