ASTROSAT CZTI

Data Quality Report

Orbit 25185

Creation date: 2024-06-27T19:14:47.149471
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/AS1A07_171T02_9000003686_25185cztM0_level2.evt modeM0/AS1A07_171T02_9000003686_25185cztM0_level2_quad_clean.evt
Size (bytes)212,981,76059,215,680
Size203.1 MB 56.5 MB
Events in quadrant A1,392,352399,299
Events in quadrant B1,444,928402,691
Events in quadrant C1,627,438386,304
Events in quadrant D1,769,445380,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062920
B063830
C066830
D072420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A314420.063613%
B314570.222576%
C3145120.381558%
D3145310.985692%

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 3144 3144 0 0 0.00% 0.00%
B 3145 3145 3 3 0.10% 0.10%
C 3145 3145 0 0 0.00% 0.00%
D 3145 3145 35 35 1.11% 1.11%

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 13 254 5381 68.08 360 354 73.8
A 3 137 3333 40.34 360 354 73.8
A 0 226 3141 37.74 360 354 73.8
B 3 64 24877 355.98 355 348 68.9
B 0 190 12474 175.98 355 348 68.9
B 0 189 9247 129.15 355 348 68.9
C 7 247 247555 3091.85 338 339 80.0
C 14 238 54505 677.44 338 339 80.0
C 13 61 2347 25.11 338 339 80.0
D 12 233 242673 2873.35 344 333 84.3
D 8 195 102352 1209.61 344 333 84.3
D 1 52 61080 720.26 344 333 84.3

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