ASTROSAT CZTI

Data Quality Report

Orbit 40226

Creation date: 2024-06-27T22:13:49.790691
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_40226cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40226cztM0_level2_quad_clean.evt
Size (bytes)330,056,64090,970,560
Size314.8 MB 86.8 MB
Events in quadrant A2,941,017610,531
Events in quadrant B2,651,404628,373
Events in quadrant C2,823,080601,509
Events in quadrant D3,386,012540,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122153
B0115212
C0115622
D0137882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5340611.142322%
B5340380.711610%
C5340160.299625%
D53402354.400749%

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 7133 5341 29 29 0.41% 0.54%
B 7133 5341 23 23 0.32% 0.43%
C 7133 5341 8 8 0.11% 0.15%
D 7133 5341 154 154 2.16% 2.88%

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 475256 3847.81 597 584 123.4
A 13 248 145601 1175.54 597 584 123.4
A 13 6 10424 79.77 597 584 123.4
B 5 255 141782 1231.26 594 577 114.7
B 0 245 54022 466.02 594 577 114.7
B 4 171 50029 431.21 594 577 114.7
C 15 214 228967 1667.58 588 592 136.9
C 9 187 122535 890.42 588 592 136.9
C 1 16 108140 785.31 588 592 136.9
D 12 227 546090 3885.47 576 560 140.4
D 13 249 358172 2547.05 576 560 140.4
D 12 233 105511 747.5 576 560 140.4

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