ASTROSAT CZTI

Data Quality Report

Orbit 58209

Creation date: 2026-07-01T19:08:46.200706
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_042T02_9000006586_58209cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58209cztM0_level2_quad_clean.evt
Size (bytes)423,302,40096,258,240
Size403.7 MB 91.8 MB
Events in quadrant A3,230,632637,686
Events in quadrant B4,947,623651,516
Events in quadrant C3,255,354602,438
Events in quadrant D3,729,782569,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142441
B0189211
C0143521
D0154771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65011642.522689%
B65024877.490003%
C65011782.738040%
D65011422.184279%

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 7496 6502 63 63 0.84% 0.97%
B 7497 6502 323 323 4.31% 4.97%
C 7496 6501 47 47 0.63% 0.72%
D 7496 6502 62 62 0.83% 0.95%

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 13 248 317188 1751.45 726 705 180.7
A 3 245 37552 203.91 726 705 180.7
A 3 31 23121 124.05 726 705 180.7
B 10 128 861621 5781.5 693 668 148.9
B 2 249 687126 4609.73 693 668 148.9
B 4 201 231969 1553.24 693 668 148.9
C 12 252 190063 985.26 697 691 192.2
C 4 239 168845 874.87 697 691 192.2
C 6 223 88755 458.18 697 691 192.2
D 8 160 290551 1444.05 706 677 200.7
D 8 240 249026 1237.18 706 677 200.7
D 12 110 140322 695.66 706 677 200.7

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