ASTROSAT CZTI

Data Quality Report

Orbit 04818

Creation date: 2024-06-27T14:47:26.865261
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/AS1G05_144T01_9000000612_04818cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04818cztM0_level2_quad_clean.evt
Size (bytes)108,892,80020,283,840
Size103.8 MB 19.3 MB
Events in quadrant A645,465135,279
Events in quadrant B698,014134,690
Events in quadrant C529,255133,971
Events in quadrant D1,345,839124,039

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026021
B027760
C022640
D047750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1121161.427297%
B1121211.873327%
C112110.089206%
D1121877.760928%

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 1121 1121 5 5 0.45% 0.45%
B 1121 1121 12 12 1.07% 1.07%
C 1121 1121 0 0 0.00% 0.00%
D 1121 1121 80 80 7.14% 7.14%

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 13 251 59372 1905.83 143 141 31.1
A 14 111 13508 430.1 143 141 31.1
A 8 15 10363 328.91 143 141 31.1
B 4 80 130047 4479.51 140 137 29.0
B 15 54 10538 358.64 140 137 29.0
B 15 204 6582 222.23 140 137 29.0
C 13 61 1172 31.03 135 135 33.4
C 12 4 752 18.46 135 135 33.4
C 3 202 390 7.63 135 135 33.4
D 13 105 694472 20033.17 135 131 34.7
D 13 235 66957 1928.07 135 131 34.7
D 2 136 50029 1439.66 135 131 34.7

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