ASTROSAT CZTI

Data Quality Report

Orbit 54657

Creation date: 2025-11-04T21:10:30.537296
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_066T07_9000006522_54657cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54657cztM0_level2_quad_clean.evt
Size (bytes)606,136,32095,284,800
Size578.1 MB 90.9 MB
Events in quadrant A3,605,709657,817
Events in quadrant B3,905,896708,952
Events in quadrant C4,616,272600,674
Events in quadrant D9,761,411426,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158312
B0164432
C0188492
D0338512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70532313.275202%
B70531962.778959%
C70535617.954062%
D7052230632.699943%

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 7953 7053 105 105 1.32% 1.49%
B 7953 7053 45 45 0.57% 0.64%
C 7953 7053 368 368 4.63% 5.22%
D 7952 7052 1947 1947 24.48% 27.61%

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 11 3 391613 2026.5 780 761 192.9
A 5 240 97769 502.97 780 761 192.9
A 0 8 48295 246.45 780 761 192.9
B 5 172 357182 2157.83 766 737 165.2
B 10 247 166075 1000.91 766 737 165.2
B 2 249 130169 783.55 766 737 165.2
C 4 5 1387315 6907.99 736 727 200.7
C 13 3 179600 891.15 736 727 200.7
C 12 250 66510 327.73 736 727 200.7
D 11 129 5973146 32524.76 646 616 183.6
D 2 62 634663 3452.85 646 616 183.6
D 15 94 249437 1355.01 646 616 183.6

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