ASTROSAT CZTI

Data Quality Report

Orbit 59418

Creation date: 2026-09-21T03:11:47.057186
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_033T01_9000006608_59418cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59418cztM0_level2_quad_clean.evt
Size (bytes)686,770,560109,477,440
Size655.0 MB 104.4 MB
Events in quadrant A6,383,950698,033
Events in quadrant B5,412,796783,225
Events in quadrant C7,743,868637,964
Events in quadrant D5,267,652645,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02462635
B02156840
C02861944
D02163361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79157699.715730%
B79196237.867155%
C7909137817.423189%
D79085847.384927%

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 8378 7927 541 541 6.46% 6.82%
B 8378 7928 408 408 4.87% 5.15%
C 8378 7924 1025 1025 12.23% 12.94%
D 8378 7924 366 366 4.37% 4.62%

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 14 238 2469190 11713.35 862 840 210.7
A 0 117 438661 2077.64 862 840 210.7
A 14 254 36878 171.02 862 840 210.7
B 4 236 950513 5118.94 865 829 185.5
B 5 185 392954 2113.61 865 829 185.5
B 4 201 171848 921.82 865 829 185.5
C 2 12 3957419 17856.05 809 801 221.6
C 4 5 251055 1129.39 809 801 221.6
C 14 96 147192 660.66 809 801 221.6
D 6 239 1306579 5562.38 837 800 234.8
D 12 110 343944 1461.73 837 800 234.8
D 2 120 119968 507.63 837 800 234.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct