ASTROSAT CZTI

Data Quality Report

Orbit 58835

Creation date: 2026-08-12T21:35:45.515644
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_106T01_9000006596_58835cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58835cztM0_level2_quad_clean.evt
Size (bytes)568,923,84091,123,200
Size542.6 MB 86.9 MB
Events in quadrant A5,191,637593,401
Events in quadrant B5,475,466602,393
Events in quadrant C3,392,406590,772
Events in quadrant D6,509,297529,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197511
B0205721
C0145671
D0236821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63335067.989894%
B633479912.614462%
C63341231.941901%
D63345759.077992%

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 7008 6334 349 349 4.98% 5.51%
B 7009 6335 422 422 6.02% 6.66%
C 7009 6335 57 57 0.81% 0.90%
D 7009 6335 457 457 6.52% 7.21%

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 973400 5588.11 694 676 174.1
A 10 251 669891 3844.51 694 676 174.1
A 15 233 588496 3376.91 694 676 174.1
B 4 171 1166608 8006.38 679 656 145.6
B 6 255 499522 3425.62 679 656 145.6
B 5 185 328567 2251.7 679 656 145.6
C 1 12 167982 881.22 692 686 189.8
C 13 3 120127 629.15 692 686 189.8
C 2 255 98974 517.72 692 686 189.8
D 12 110 3380947 17224.44 684 654 196.2
D 12 248 141634 718.37 684 654 196.2
D 2 249 86826 439.09 684 654 196.2

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