ASTROSAT CZTI

Data Quality Report

Orbit 56418

Creation date: 2026-03-03T06:42:20.105096
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_083T05_9000006554_56418cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56418cztM0_level2_quad_clean.evt
Size (bytes)821,318,40075,199,680
Size783.3 MB 71.7 MB
Events in quadrant A12,034,734320,941
Events in quadrant B5,004,567571,478
Events in quadrant C3,295,981552,295
Events in quadrant D9,567,713381,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401342
B0192782
C0145802
D0329695

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6459332351.447593%
B645977912.060691%
C64591151.780461%
D6458192529.807990%

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 7871 6734 3076 3076 39.08% 45.68%
B 7870 6741 432 432 5.49% 6.41%
C 7871 6742 83 83 1.05% 1.23%
D 7870 6741 1800 1800 22.87% 26.70%

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 3 5638964 42993.09 520 507 131.1
A 4 95 2070054 15780.24 520 507 131.1
A 7 64 1082895 8253.18 520 507 131.1
B 4 206 1963380 13986.98 658 635 140.3
B 8 128 69213 488.7 658 635 140.3
B 10 247 63496 447.96 658 635 140.3
C 15 230 358206 1935.26 672 666 184.8
C 12 254 153046 824.79 672 666 184.8
C 6 223 66798 357.95 672 666 184.8
D 8 129 5267512 33668.41 544 519 156.4
D 2 120 511943 3269.2 544 519 156.4
D 2 249 486205 3104.67 544 519 156.4

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