ASTROSAT CZTI

Data Quality Report

Orbit 30420

Creation date: 2024-06-27T20:15:00.388134
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/AS1C05_019T04_9000004376_30420cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30420cztM0_level2_quad_clean.evt
Size (bytes)1,531,457,280268,058,880
Size1.4 GB 255.6 MB
Events in quadrant A8,856,4141,747,907
Events in quadrant B14,309,9201,746,986
Events in quadrant C9,047,8171,713,032
Events in quadrant D12,899,3491,616,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386413
B0568173
C0388394
D0509213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187911640.872758%
B187922911.548531%
C187912441.298494%
D1879113677.274759%

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 20466 18792 16 16 0.08% 0.09%
B 20467 18792 17 17 0.08% 0.09%
C 20466 18792 9 9 0.04% 0.05%
D 20466 18791 1023 1023 5.00% 5.44%

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 0 13 144229 322.12 2206 2160 441.0
A 14 239 143393 320.23 2206 2160 441.0
A 13 254 35507 75.61 2206 2160 441.0
B 6 159 5261411 12689.19 2184 2124 414.5
B 4 80 202984 484.62 2184 2124 414.5
B 0 229 120376 285.31 2184 2124 414.5
C 14 238 349367 704.66 2124 2133 492.8
C 10 22 200353 402.26 2124 2133 492.8
C 3 233 178888 358.7 2124 2133 492.8
D 13 104 2734389 5138.7 2065 2026 531.7
D 13 249 1298697 2438.62 2065 2026 531.7
D 8 195 663419 1243.87 2065 2026 531.7

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