ASTROSAT CZTI

Data Quality Report

Orbit 56888

Creation date: 2026-04-03T22:28:13.950677
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_083T14_9000006564_56888cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56888cztM0_level2_quad_clean.evt
Size (bytes)488,900,160109,632,960
Size466.3 MB 104.6 MB
Events in quadrant A3,451,131732,127
Events in quadrant B3,932,147759,736
Events in quadrant C3,957,280696,810
Events in quadrant D6,163,776600,662

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01522
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01625320
B01741216
C01758210
D02382453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7627971.271798%
B76282563.356057%
C7629720.943767%
D762382210.783156%

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 7683 7635 18 18 0.23% 0.24%
B 7683 7635 94 94 1.22% 1.23%
C 7683 7635 30 30 0.39% 0.39%
D 7683 7635 815 815 10.61% 10.67%

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 3 14 87752 431.38 813 792 201.6
A 10 251 83425 409.92 813 792 201.6
A 8 249 73914 362.74 813 792 201.6
B 10 16 364226 2137.81 783 752 170.0
B 5 185 137103 801.96 783 752 170.0
B 10 247 71493 416.07 783 752 170.0
C 13 3 241993 1123.36 779 770 214.7
C 6 9 230214 1068.5 779 770 214.7
C 1 16 121551 562.47 779 770 214.7
D 2 249 2186592 10273.84 752 718 212.8
D 8 160 331479 1554.61 752 718 212.8
D 8 240 282791 1325.77 752 718 212.8

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