ASTROSAT CZTI

Data Quality Report

Orbit 38737

Creation date: 2024-06-27T21:55:47.215962
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_38737cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38737cztM0_level2_quad_clean.evt
Size (bytes)483,376,32091,630,080
Size461.0 MB 87.4 MB
Events in quadrant A3,865,743638,919
Events in quadrant B2,583,380681,791
Events in quadrant C2,813,000636,839
Events in quadrant D8,222,399448,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149693
B0110202
C0115282
D0280532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52622324.408970%
B5262200.380084%
C5262280.532117%
D5262153529.171418%

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 7354 5263 154 154 2.09% 2.93%
B 7354 5263 11 11 0.15% 0.21%
C 7354 5263 19 19 0.26% 0.36%
D 7354 5263 1317 1317 17.91% 25.02%

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 0 8 1080119 8862.88 605 594 121.8
A 10 83 392420 3216.88 605 594 121.8
A 9 143 51735 419.86 605 594 121.8
B 4 171 133564 1133.5 613 597 117.3
B 0 230 20965 173.63 613 597 117.3
B 12 111 14055 114.72 613 597 117.3
C 15 214 217941 1575.08 593 598 138.0
C 14 254 189891 1371.8 593 598 138.0
C 0 10 62988 452.14 593 598 138.0
D 2 16 4068175 31090.74 537 521 130.8
D 12 235 870576 6650.18 537 521 130.8
D 14 52 403946 3083.54 537 521 130.8

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