ASTROSAT CZTI

Data Quality Report

Orbit 54993

Creation date: 2025-11-27T14:24:47.518175
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_014T01_9000006528_54993cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54993cztM0_level2_quad_clean.evt
Size (bytes)1,435,072,320120,193,920
Size1.3 GB 114.6 MB
Events in quadrant A12,348,623760,087
Events in quadrant B6,803,2281,090,939
Events in quadrant C5,866,599968,013
Events in quadrant D27,264,30069,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04421111
B0279478
C0254372
D0884309

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10844310528.633346%
B108443353.089266%
C108452342.157676%
D108441020994.144227%

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 12810 10847 2847 2847 22.22% 26.25%
B 12810 10847 333 333 2.60% 3.07%
C 12810 10847 197 197 1.54% 1.82%
D 12809 10844 9678 9678 75.56% 89.25%

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 15 32 7606862 31950.08 965 943 238.1
A 0 8 721217 3025.65 965 943 238.1
A 3 14 151526 632.55 965 943 238.1
B 5 236 1790335 7505.93 1119 1079 238.4
B 10 247 146003 607.95 1119 1079 238.4
B 10 245 141567 589.35 1119 1079 238.4
C 13 3 656933 2157.44 1101 1092 304.0
C 6 223 285140 934.4 1101 1092 304.0
C 14 254 169420 553.73 1101 1092 304.0
D 15 94 23984660 187812.37 445 426 127.7
D 11 129 300365 2348.72 445 426 127.7
D 2 249 283256 2214.75 445 426 127.7

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