ASTROSAT CZTI

Data Quality Report

Orbit 28531

Creation date: 2024-06-27T19:52:55.768316
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/AS1A10_058T09_9000004100_28531cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28531cztM0_level2_quad_clean.evt
Size (bytes)637,689,60093,041,280
Size608.1 MB 88.7 MB
Events in quadrant A3,558,511629,324
Events in quadrant B4,317,963613,540
Events in quadrant C3,365,133599,382
Events in quadrant D7,638,000528,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145882
B0169042
C0139242
D0272852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64021071.671353%
B64024056.326148%
C6402971.515152%
D6402102916.073102%

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 7678 6403 30 30 0.39% 0.47%
B 7678 6402 305 305 3.97% 4.76%
C 7678 6403 0 0 0.00% 0.00%
D 7678 6403 1099 1099 14.31% 17.16%

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 292792 1746.7 842 828 167.2
A 8 192 14287 80.52 842 828 167.2
A 13 254 13260 74.38 842 828 167.2
B 10 245 970106 6218.88 824 807 155.9
B 0 230 48659 307.01 824 807 155.9
B 5 255 34799 218.09 824 807 155.9
C 14 238 132000 707.57 797 804 185.4
C 3 233 86737 463.45 797 804 185.4
C 7 247 33661 177.2 797 804 185.4
D 1 52 2927206 16507.94 745 727 177.3
D 8 195 1545200 8712.2 745 727 177.3
D 6 112 101868 570.53 745 727 177.3

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