ASTROSAT CZTI

Data Quality Report

Orbit 53599

Creation date: 2025-08-26T11:23:11.091570
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_004T05_9000006502_53599cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53599cztM0_level2_quad_clean.evt
Size (bytes)695,790,72086,235,840
Size663.6 MB 82.2 MB
Events in quadrant A7,040,289564,644
Events in quadrant B4,457,543637,757
Events in quadrant C9,131,288424,934
Events in quadrant D4,636,260541,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253212
B0173871
C0314791
D0181011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633595615.090766%
B63355378.476717%
C6336208032.828283%
D63363846.060606%

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 7445 6335 704 704 9.46% 11.11%
B 7445 6335 356 356 4.78% 5.62%
C 7446 6336 1900 1900 25.52% 29.99%
D 7446 6336 317 317 4.26% 5.00%

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 3 62 3912663 23096.75 681 662 169.4
A 15 174 290849 1713.29 681 662 169.4
A 3 63 101079 592.87 681 662 169.4
B 5 172 1218577 8347.1 678 653 145.9
B 2 249 108641 740.1 678 653 145.9
B 15 32 88237 600.26 678 653 145.9
C 1 241 3608398 23151.96 569 567 155.8
C 15 224 2189497 14046.67 569 567 155.8
C 4 5 317187 2031.8 569 567 155.8
D 8 176 1107167 5837.34 671 642 189.6
D 10 172 193800 1018.98 671 642 189.6
D 2 120 96710 506.8 671 642 189.6

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