ASTROSAT CZTI

Data Quality Report

Orbit 59402

Creation date: 2026-09-20T01:09:47.324136
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_59402cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59402cztM0_level2_quad_clean.evt
Size (bytes)493,427,520111,286,080
Size470.6 MB 106.1 MB
Events in quadrant A3,435,009732,987
Events in quadrant B4,086,975784,173
Events in quadrant C3,968,521705,971
Events in quadrant D6,188,144621,877

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157752
B0174922
C0172752
D0236082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75441181.564157%
B75452793.697813%
C75452182.889331%
D75456088.058317%

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 9229 7546 5 5 0.05% 0.07%
B 9230 7547 86 86 0.93% 1.14%
C 9230 7547 87 87 0.94% 1.15%
D 9230 7547 323 323 3.50% 4.28%

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 45299 214.64 848 825 207.2
A 3 245 40016 189.14 848 825 207.2
A 15 233 30148 141.52 848 825 207.2
B 6 255 510510 2832.99 838 806 179.9
B 4 201 71975 395.57 838 806 179.9
B 7 252 55539 304.21 838 806 179.9
C 6 223 256463 1135.19 830 822 225.2
C 4 5 218328 965.85 830 822 225.2
C 15 208 134172 592.15 830 822 225.2
D 12 110 2096327 9191.75 808 773 228.0
D 13 138 721934 3163.24 808 773 228.0
D 2 31 114435 498.56 808 773 228.0

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