ASTROSAT CZTI

Data Quality Report

Orbit 37972

Creation date: 2024-06-27T21:46:50.701672
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/AS1A11_082T01_9000005356_37972cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37972cztM0_level2_quad_clean.evt
Size (bytes)444,922,56091,071,360
Size424.3 MB 86.9 MB
Events in quadrant A4,474,027592,055
Events in quadrant B3,373,495601,416
Events in quadrant C2,597,788623,952
Events in quadrant D2,688,667588,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168653
B0132882
C0107152
D0112772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5021420.836487%
B50213256.472814%
C5021330.657240%
D5021781.553475%

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 7025 5022 12 12 0.17% 0.24%
B 7025 5022 195 195 2.78% 3.88%
C 7025 5022 23 23 0.33% 0.46%
D 7025 5022 66 66 0.94% 1.31%

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 15 222 1843404 15894.36 576 567 115.9
A 10 83 362976 3125.76 576 567 115.9
A 9 143 15782 131.23 576 567 115.9
B 5 184 820431 7696.25 561 547 106.5
B 5 172 143980 1346.4 561 547 106.5
B 4 81 72926 679.42 561 547 106.5
C 15 214 217932 1675.29 563 568 129.7
C 0 10 145178 1114.55 563 568 129.7
C 14 254 31760 240.41 563 568 129.7
D 12 233 181828 1328.15 563 549 136.5
D 10 199 120170 876.41 563 549 136.5
D 13 249 56329 408.67 563 549 136.5

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