ASTROSAT CZTI

Data Quality Report

Orbit 18464

Creation date: 2024-06-27T17:50:22.187981
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/AS1A05_144T02_9000002734_18464cztM0_level2.evt modeM0/AS1A05_144T02_9000002734_18464cztM0_level2_quad_clean.evt
Size (bytes)141,880,32030,775,680
Size135.3 MB 29.3 MB
Events in quadrant A1,133,165207,077
Events in quadrant B894,669215,317
Events in quadrant C844,247198,703
Events in quadrant D1,307,456186,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044520
B037860
C035920
D049830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16881005.924171%
B1689231.361753%
C1689281.657786%
D16891398.229722%

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 1688 1688 88 88 5.21% 5.21%
B 1689 1689 12 12 0.71% 0.71%
C 1689 1689 18 18 1.07% 1.07%
D 1689 1689 135 135 7.99% 7.99%

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 310316 7519.47 195 191 41.2
A 4 2 50290 1214.73 195 191 41.2
A 15 174 20073 482.07 195 191 41.2
B 7 220 99505 2605.58 195 191 38.1
B 10 245 18134 470.75 195 191 38.1
B 6 36 13432 347.39 195 191 38.1
C 0 207 61517 1362.47 186 186 45.0
C 14 238 28996 640.02 186 186 45.0
C 3 233 25458 561.42 186 186 45.0
D 7 238 368936 7889.73 184 178 46.7
D 7 38 90545 1933.44 184 178 46.7
D 13 168 77947 1663.9 184 178 46.7

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