ASTROSAT CZTI

Data Quality Report

Orbit 50557

Creation date: 2025-02-01T18:09:27.230399
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/AS1T05_239T01_9000006444_50557cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50557cztM0_level2_quad_clean.evt
Size (bytes)1,149,013,44073,995,840
Size1.1 GB 70.6 MB
Events in quadrant A4,823,237655,751
Events in quadrant B6,512,511667,224
Events in quadrant C14,284,466235,999
Events in quadrant D16,353,979176,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191642
B0243950
C0474140
D0535130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72412483.424941%
B724178610.854854%
C7241485567.048750%
D7241543175.003453%

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 7241 7241 167 167 2.31% 2.31%
B 7240 7240 543 543 7.50% 7.50%
C 7240 7240 4249 4249 58.69% 58.69%
D 7241 7241 5531 5531 76.38% 76.38%

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 12 250 626184 3273.83 760 739 191.0
A 3 130 188218 981.34 760 739 191.0
A 4 3 172792 900.59 760 739 191.0
B 12 0 933086 6145.3 718 694 151.7
B 0 229 678688 4468.59 718 694 151.7
B 3 249 584364 3846.91 718 694 151.7
C 15 196 4213548 31374.29 462 457 134.3
C 15 214 4129931 30751.6 462 457 134.3
C 15 174 653468 4862.88 462 457 134.3
D 7 61 6906767 55408.63 440 425 124.6
D 15 184 3739751 30000.1 440 425 124.6
D 15 185 632821 5073.63 440 425 124.6

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