ASTROSAT CZTI

Data Quality Report

Orbit 59361

Creation date: 2026-09-17T07:14:38.916640
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_59361cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59361cztM0_level2_quad_clean.evt
Size (bytes)571,072,320124,692,480
Size544.6 MB 118.9 MB
Events in quadrant A4,010,288810,944
Events in quadrant B4,507,045872,481
Events in quadrant C5,346,462779,611
Events in quadrant D6,620,025725,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181445
B0195858
C0218084
D0258304

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8451210.248491%
B84511491.763105%
C84511982.342918%
D84532362.791908%

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 8454 8453 12 12 0.14% 0.14%
B 8454 8453 47 47 0.56% 0.56%
C 8454 8454 124 124 1.47% 1.47%
D 8454 8454 201 201 2.38% 2.38%

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 13 153 180059 780.44 935 911 229.5
A 10 251 129771 561.37 935 911 229.5
A 3 245 43714 186.47 935 911 229.5
B 4 171 410009 2014.77 933 895 203.1
B 5 236 71267 346.56 933 895 203.1
B 10 247 67449 327.76 933 895 203.1
C 12 252 747899 2961.78 921 913 252.2
C 14 254 527936 2089.64 921 913 252.2
C 3 233 202583 799.62 921 913 252.2
D 12 110 2808266 10861.25 910 870 258.5
D 5 32 72841 278.44 910 870 258.5
D 12 2 63398 241.91 910 870 258.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct