ASTROSAT CZTI

Data Quality Report

Orbit 16908

Creation date: 2024-06-27T17:29:23.066002
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_225T02_9000002510_16908cztM0_level2.evt modeM0/AS1A05_225T02_9000002510_16908cztM0_level2_quad_clean.evt
Size (bytes)189,443,52037,209,600
Size180.7 MB 35.5 MB
Events in quadrant A2,461,884225,059
Events in quadrant B1,021,307266,066
Events in quadrant C1,016,888249,131
Events in quadrant D1,101,171242,880

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086984
B042221
C042331
D045661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197168734.855403%
B19711085.479452%
C19711145.783866%
D19711125.682395%

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 2937 1973 334 334 11.37% 16.93%
B 2937 1973 0 0 0.00% 0.00%
C 2937 1973 0 0 0.00% 0.00%
D 2937 1973 26 26 0.89% 1.32%

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 15 174 1564290 33010.75 228 223 47.4
A 12 189 15437 321.1 228 223 47.4
A 0 226 2084 39.28 228 223 47.4
B 0 229 9515 183.4 253 246 50.5
B 15 35 8890 171.03 253 246 50.5
B 12 111 5706 108.03 253 246 50.5
C 3 233 50747 904.23 237 238 55.9
C 14 238 37275 663.05 237 238 55.9
C 13 61 1704 26.24 237 238 55.9
D 1 52 164865 2743.31 244 235 60.0
D 2 234 7512 121.26 244 235 60.0
D 15 145 5303 84.45 244 235 60.0

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