ASTROSAT CZTI

Data Quality Report

Orbit 57524

Creation date: 2026-05-16T17:25:06.568736
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_113T09_9000006574_57524cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57524cztM0_level2_quad_clean.evt
Size (bytes)1,570,397,760319,752,000
Size1.5 GB 304.9 MB
Events in quadrant A10,029,8542,181,985
Events in quadrant B12,253,0742,270,070
Events in quadrant C20,943,6161,826,589
Events in quadrant D13,248,4431,928,683

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04360
B04360
C04360
D04360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453944
B0507664
C0772414
D0544174

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214142721.270197%
B214146222.904642%
C21414313114.621276%
D2141410394.851966%

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 25554 21419 17 17 0.07% 0.08%
B 25554 21419 211 211 0.83% 0.99%
C 25554 21419 2257 2257 8.83% 10.54%
D 25554 21419 693 693 2.71% 3.24%

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 525766 884.37 2387 2328 591.9
A 7 14 198700 331.78 2387 2328 591.9
A 13 248 37026 58.62 2387 2328 591.9
B 4 206 1364824 2804.79 2308 2224 485.8
B 5 185 705096 1446.8 2308 2224 485.8
B 9 251 389742 797.67 2308 2224 485.8
C 15 224 10960514 18266.46 2187 2161 599.9
C 6 223 528397 877.18 2187 2161 599.9
C 1 16 332626 550.85 2187 2161 599.9
D 15 142 1054009 1632.43 2288 2188 644.3
D 8 240 781354 1209.27 2288 2188 644.3
D 0 19 681752 1054.69 2288 2188 644.3

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