ASTROSAT CZTI

Data Quality Report

Orbit 31387

Creation date: 2024-06-27T20:27:37.970270
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/AS1C06_006T05_9000004550_31387cztM0_level2.evt modeM0/AS1C06_006T05_9000004550_31387cztM0_level2_quad_clean.evt
Size (bytes)193,746,24042,125,760
Size184.8 MB 40.2 MB
Events in quadrant A1,096,055290,675
Events in quadrant B2,100,931276,128
Events in quadrant C1,138,735276,482
Events in quadrant D1,382,014274,615

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442
B0440
C0442
D0442

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04794115
B08058341
C04839102
D05688152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2180502.293578%
B216422310.304991%
C2190853.881279%
D2187472.149063%

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 2239 2197 0 0 0.00% 0.00%
B 2240 2178 59 59 2.63% 2.71%
C 2240 2209 1 1 0.04% 0.05%
D 2240 2212 7 7 0.31% 0.32%

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 4220 66.65 283 277 59.2
A 3 137 2784 42.38 283 277 59.2
A 0 226 2536 38.19 283 277 59.2
B 6 159 621565 11583.47 266 259 53.6
B 5 172 182633 3400.13 266 259 53.6
B 15 33 89987 1672.87 266 259 53.6
C 14 238 43633 659.01 269 270 65.8
C 3 233 28631 431.02 269 270 65.8
C 4 175 5408 78.09 269 270 65.8
D 8 195 241838 3473.75 278 269 69.5
D 7 69 29650 422.5 278 269 69.5
D 13 249 21454 304.64 278 269 69.5

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