ASTROSAT CZTI

Data Quality Report

Orbit 54049

Creation date: 2025-09-24T20:41:07.387196
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_041T01_9000006510_54049cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54049cztM0_level2_quad_clean.evt
Size (bytes)538,208,64077,592,960
Size513.3 MB 74.0 MB
Events in quadrant A3,709,071561,219
Events in quadrant B3,144,368612,391
Events in quadrant C2,951,768523,511
Events in quadrant D9,662,139243,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152121
B0133001
C0132081
D0327771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58462213.780363%
B58471362.325979%
C58471662.839063%
D5847324155.430135%

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 6856 5847 132 132 1.93% 2.26%
B 6857 5848 55 55 0.80% 0.94%
C 6857 5848 114 114 1.66% 1.95%
D 6856 5847 2400 2400 35.01% 41.05%

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 15 533931 3475.92 614 597 153.4
A 15 174 337832 2197.88 614 597 153.4
A 12 115 314807 2047.82 614 597 153.4
B 15 20 188224 1433.1 613 590 130.9
B 5 236 161427 1228.43 613 590 130.9
B 0 213 82495 625.57 613 590 130.9
C 4 5 307222 1863.6 596 590 164.5
C 13 3 81028 488.87 596 590 164.5
C 14 254 69814 420.72 596 590 164.5
D 8 176 7738531 70733.61 379 361 109.4
D 2 62 227931 2080.19 379 361 109.4
D 3 12 97410 887.11 379 361 109.4

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