ASTROSAT CZTI

Data Quality Report

Orbit 59008

Creation date: 2026-08-24T15:09:04.241057
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_004T02_9000006600_59008cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59008cztM0_level2_quad_clean.evt
Size (bytes)167,192,64025,395,840
Size159.4 MB 24.2 MB
Events in quadrant A1,254,381157,548
Events in quadrant B1,412,892174,270
Events in quadrant C1,212,474169,259
Events in quadrant D2,167,514136,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049351
B054001
C048241
D076708

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179223313.002232%
B179226514.787946%
C17921156.417411%
D179136420.323841%

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 2847 1792 100 100 3.51% 5.58%
B 2847 1792 67 67 2.35% 3.74%
C 2847 1792 26 26 0.91% 1.45%
D 2845 1790 235 235 8.26% 13.13%

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 219393 4109.79 214 208 53.3
A 10 251 142841 2674.41 214 208 53.3
A 15 233 30078 560.07 214 208 53.3
B 5 185 488667 9889.99 221 212 49.4
B 0 63 15777 315.15 221 212 49.4
B 4 236 10194 202.11 221 212 49.4
C 15 219 173080 2820.84 222 220 61.3
C 14 254 64332 1046.22 222 220 61.3
C 6 223 64104 1042.5 222 220 61.3
D 12 110 1252356 21428.12 201 191 58.4
D 2 31 55022 938.32 201 191 58.4
D 8 160 23220 394.09 201 191 58.4

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