ASTROSAT CZTI

Data Quality Report

Orbit 56430

Creation date: 2026-03-04T03:33:12.572622
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_56430cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56430cztM0_level2_quad_clean.evt
Size (bytes)718,752,96087,076,800
Size685.5 MB 83.0 MB
Events in quadrant A7,362,338569,283
Events in quadrant B6,509,658552,241
Events in quadrant C6,264,549542,552
Events in quadrant D5,950,278504,766

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265212
B0240401
C0232811
D0224471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A670290013.428827%
B6702142921.321993%
C670285912.817070%
D670277911.623396%

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 7687 6703 820 820 10.67% 12.23%
B 7687 6703 1027 1027 13.36% 15.32%
C 7687 6702 805 805 10.47% 12.01%
D 7687 6703 852 852 11.08% 12.71%

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 4 95 2477769 14688.21 678 662 168.6
A 12 3 1013030 6002.92 678 662 168.6
A 8 249 707541 4191.49 678 662 168.6
B 4 206 3242426 23396.07 637 615 138.6
B 0 231 373482 2690.97 637 615 138.6
B 4 171 65664 469.46 637 615 138.6
C 12 254 1731610 9656.46 645 637 179.3
C 15 230 1045914 5831.21 645 637 179.3
C 13 3 289901 1613.7 645 637 179.3
D 8 160 1852401 9980.2 650 620 185.5
D 7 96 357191 1921.74 650 620 185.5
D 3 12 233601 1255.65 650 620 185.5

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