ASTROSAT CZTI

Data Quality Report

Orbit 38662

Creation date: 2024-06-27T21:54:47.594227
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_054T01_9000005392_38662cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38662cztM0_level2_quad_clean.evt
Size (bytes)338,163,84097,637,760
Size322.5 MB 93.1 MB
Events in quadrant A2,911,581664,657
Events in quadrant B2,694,247676,391
Events in quadrant C2,921,759637,900
Events in quadrant D3,552,586585,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121293
B0117682
C0122192
D0143672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5617180.320456%
B5617601.068186%
C5617571.014777%
D56171282.278797%

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 9113 5619 8 8 0.09% 0.14%
B 9113 5619 45 45 0.49% 0.80%
C 9113 5619 59 59 0.65% 1.05%
D 9113 5619 130 130 1.43% 2.31%

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 406578 3181.32 632 622 127.6
A 9 143 27758 212.65 632 622 127.6
A 13 248 17751 134.23 632 622 127.6
B 5 200 144693 1197.35 628 612 120.3
B 5 184 25758 208.97 628 612 120.3
B 0 230 24830 201.26 628 612 120.3
C 15 214 226917 1586.47 614 618 142.6
C 3 9 128026 893.19 614 618 142.6
C 14 254 67007 465.42 614 618 142.6
D 2 249 248315 1692.74 604 588 146.3
D 5 157 229896 1566.88 604 588 146.3
D 12 6 183387 1249.08 604 588 146.3

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