ASTROSAT CZTI

Data Quality Report

Orbit 54229

Creation date: 2025-10-07T01:13:51.703350
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/AS1C09_004T08_9000006514_54229cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54229cztM0_level2_quad_clean.evt
Size (bytes)925,735,68072,590,400
Size882.9 MB 69.2 MB
Events in quadrant A6,788,094512,109
Events in quadrant B4,336,491682,610
Events in quadrant C5,791,082511,776
Events in quadrant D16,825,93019,245

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249851
B0176501
C0221181
D0545772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6783151122.276279%
B67842503.685142%
C6784108515.993514%
D6783659697.243108%

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 6983 6787 1098 1098 15.72% 16.18%
B 6984 6788 72 72 1.03% 1.06%
C 6984 6788 786 786 11.25% 11.58%
D 6982 6782 5751 5751 82.37% 84.80%

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 17 2433445 15563.61 634 619 156.3
A 7 29 704258 4501.42 634 619 156.3
A 12 194 307929 1965.97 634 619 156.3
B 4 171 702237 4705.69 706 682 149.1
B 5 236 329087 2202.78 706 682 149.1
B 0 213 163692 1093.39 706 682 149.1
C 1 241 1439926 8129.72 642 636 177.0
C 15 215 722717 4078.62 642 636 177.0
C 15 189 338574 1908.82 642 636 177.0
D 8 176 16005804 436644.96 123 117 36.7
D 3 12 115273 3141.53 123 117 36.7
D 8 160 77545 2112.28 123 117 36.7

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