ASTROSAT CZTI

Data Quality Report

Orbit 55993

Creation date: 2026-02-06T13:31:44.074664
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/AS1A14_066T02_9000006546_55993cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55993cztM0_level2_quad_clean.evt
Size (bytes)373,449,60090,576,000
Size356.1 MB 86.4 MB
Events in quadrant A3,817,285571,581
Events in quadrant B3,319,032628,366
Events in quadrant C2,895,800563,683
Events in quadrant D3,296,581534,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157261
B0143341
C0135731
D0143581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63602764.339623%
B6360901.415094%
C6360510.801887%
D6360711.116352%

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 7145 6360 252 252 3.53% 3.96%
B 7145 6360 44 44 0.62% 0.69%
C 7145 6361 47 47 0.66% 0.74%
D 7145 6361 49 49 0.69% 0.77%

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 7 64 816783 4917.88 668 652 166.0
A 12 115 201994 1213.26 668 652 166.0
A 4 3 55092 328.05 668 652 166.0
B 0 173 166302 1157.25 662 637 143.2
B 0 199 166295 1157.21 662 637 143.2
B 2 249 132690 922.46 662 637 143.2
C 8 7 105565 586.17 650 642 179.0
C 12 254 82909 459.6 650 642 179.0
C 1 246 46961 258.77 650 642 179.0
D 6 239 248056 1332.62 655 627 185.7
D 2 249 136169 730.01 655 627 185.7
D 7 129 94858 507.52 655 627 185.7

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