ASTROSAT CZTI

Data Quality Report

Orbit 16287

Creation date: 2024-06-27T17:20:35.865951
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_212T09_9000002398_16287cztM0_level2.evt modeM0/AS1A05_212T09_9000002398_16287cztM0_level2_quad_clean.evt
Size (bytes)113,788,80016,943,040
Size108.5 MB 16.2 MB
Events in quadrant A848,42998,268
Events in quadrant B809,484101,416
Events in quadrant C786,321100,862
Events in quadrant D894,07497,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034602
B033051
C032561
D035961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1548392.519380%
B1548201.291990%
C1548362.325581%
D1548322.067183%

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 1549 1549 12 12 0.77% 0.77%
B 1549 1549 0 0 0.00% 0.00%
C 1549 1549 0 0 0.00% 0.00%
D 1549 1549 19 19 1.23% 1.23%

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 15 239 77832 1831.78 200 195 42.4
A 0 226 1833 38.65 200 195 42.4
A 12 194 1531 31.52 200 195 42.4
B 0 198 10409 253.31 198 194 40.3
B 0 189 9147 222.02 198 194 40.3
B 3 64 8379 202.97 198 194 40.3
C 14 238 30049 641.42 192 193 46.5
C 3 233 3441 69.78 192 193 46.5
C 0 207 1803 34.59 192 193 46.5
D 10 70 124601 2528.74 196 190 49.2
D 1 52 17888 359.72 196 190 49.2
D 15 0 9488 188.99 196 190 49.2

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