ASTROSAT CZTI

Data Quality Report

Orbit 42536

Creation date: 2024-06-27T22:41:21.306691
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/AS1A09_002T01_9000005810_42536cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42536cztM0_level2_quad_clean.evt
Size (bytes)327,519,36093,280,320
Size312.3 MB 89.0 MB
Events in quadrant A3,006,927629,478
Events in quadrant B3,145,165618,731
Events in quadrant C2,710,006616,636
Events in quadrant D2,824,920567,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123122
B0133892
C0116832
D0124572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5604120.214133%
B56042083.711635%
C5604140.249822%
D5604601.070664%

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 7188 5605 11 11 0.15% 0.20%
B 7188 5605 150 150 2.09% 2.68%
C 7188 5605 9 9 0.13% 0.16%
D 7188 5605 50 50 0.70% 0.89%

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 603975 4871.26 603 592 123.9
A 13 248 51688 412.51 603 592 123.9
A 2 79 18920 147.97 603 592 123.9
B 5 172 558643 4874.44 590 576 114.5
B 0 245 183897 1601.22 590 576 114.5
B 5 255 48341 417.2 590 576 114.5
C 15 214 234236 1732.91 582 586 134.8
C 14 254 162742 1202.66 582 586 134.8
C 5 250 24609 178.17 582 586 134.8
D 12 233 240023 1644.37 584 569 145.6
D 1 52 108336 740.05 584 569 145.6
D 1 47 49767 337.85 584 569 145.6

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