ASTROSAT CZTI

Data Quality Report

Orbit 40219

Creation date: 2024-06-27T22:13:45.066926
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/AS1C07_001T01_9000005532_40219cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40219cztM0_level2_quad_clean.evt
Size (bytes)427,783,68090,982,080
Size408.0 MB 86.8 MB
Events in quadrant A4,528,805579,345
Events in quadrant B2,678,850646,606
Events in quadrant C2,812,936629,539
Events in quadrant D5,358,554490,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171763
B0121882
C0122002
D0200532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58575619.578282%
B5857260.443913%
C5857160.273177%
D585792915.861362%

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 7229 5858 392 392 5.42% 6.69%
B 7229 5858 11 11 0.15% 0.19%
C 7229 5858 7 7 0.10% 0.12%
D 7229 5858 771 771 10.67% 13.16%

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 13 248 1610433 13153.75 598 585 122.4
A 10 83 489402 3994.03 598 585 122.4
A 2 79 85976 697.71 598 585 122.4
B 0 245 122049 1013.33 620 602 119.8
B 5 255 32898 269.47 620 602 119.8
B 0 229 32253 264.09 620 602 119.8
C 15 214 251292 1769.55 610 613 141.7
C 9 187 103944 729.42 610 613 141.7
C 0 10 32176 222.8 610 613 141.7
D 12 227 2059905 15259.84 553 535 135.0
D 12 233 648470 4801.17 553 535 135.0
D 12 79 184676 1364.48 553 535 135.0

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