ASTROSAT CZTI

Data Quality Report

Orbit 54225

Creation date: 2025-10-06T17:07:35.023946
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_54225cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54225cztM0_level2_quad_clean.evt
Size (bytes)648,313,92075,424,320
Size618.3 MB 71.9 MB
Events in quadrant A5,166,378535,366
Events in quadrant B3,990,406638,309
Events in quadrant C3,024,955559,408
Events in quadrant D11,349,586131,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194341
B0159681
C0134501
D0378951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599991315.219203%
B59992574.284047%
C59991041.733622%
D5999466577.762960%

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 7114 6000 740 740 10.40% 12.33%
B 7114 6000 102 102 1.43% 1.70%
C 7114 6000 54 54 0.76% 0.90%
D 7113 5998 2930 2930 41.19% 48.85%

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 1726674 11366.02 609 594 151.9
A 7 29 279166 1834.36 609 594 151.9
A 12 194 216693 1422.98 609 594 151.9
B 4 171 476524 3510.9 634 612 135.6
B 5 236 393711 2899.98 634 612 135.6
B 8 234 147711 1085.18 634 612 135.6
C 13 3 274806 1610.1 616 609 170.3
C 14 254 51619 299.53 616 609 170.3
C 15 189 45658 264.53 616 609 170.3
D 8 176 9657491 142686.16 233 222 67.7
D 2 172 341605 5043.93 233 222 67.7
D 12 2 132090 1948.35 233 222 67.7

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