ASTROSAT CZTI

Data Quality Report

Orbit 33695

Creation date: 2024-06-27T20:51:36.647052
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/AS1T04_090T01_9000004812_33695cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33695cztM0_level2_quad_clean.evt
Size (bytes)850,222,08057,718,080
Size810.8 MB 55.0 MB
Events in quadrant A13,951,568113,750
Events in quadrant B4,163,385420,213
Events in quadrant C3,183,798436,146
Events in quadrant D4,090,730402,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452443
B0157322
C0125382
D0160622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53325332100.000000%
B533255710.446362%
C5332661.237809%
D53322985.588897%

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 7065 5331 5262 5262 74.48% 98.71%
B 7066 5333 462 462 6.54% 8.66%
C 7066 5333 60 60 0.85% 1.13%
D 7066 5333 274 274 3.88% 5.14%

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 15 169 12803594 296202.96 210 207 43.2
A 15 237 173133 4000.6 210 207 43.2
A 14 4 152605 3525.69 210 207 43.2
B 5 172 1340192 11467.35 608 595 116.8
B 4 170 299815 2561.41 608 595 116.8
B 15 85 57681 488.67 608 595 116.8
C 3 233 308976 2142.69 622 628 143.9
C 15 214 229172 1588.14 622 628 143.9
C 0 10 193577 1340.79 622 628 143.9
D 8 195 655990 4330.5 614 596 151.3
D 8 230 365193 2409.07 614 596 151.3
D 13 249 243439 1604.58 614 596 151.3

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