ASTROSAT CZTI

Data Quality Report

Orbit 19201

Creation date: 2024-06-27T18:00:00.189374
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_046T01_9000002838_19201cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19201cztM0_level2_quad_clean.evt
Size (bytes)1,494,558,720223,194,240
Size1.4 GB 212.9 MB
Events in quadrant A14,402,8481,351,091
Events in quadrant B9,382,0371,413,905
Events in quadrant C10,977,5391,360,791
Events in quadrant D9,230,6341,336,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0558864
B0396863
C0444013
D0400523

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188253842.039841%
B188253161.678619%
C188253902.071713%
D188252241.189907%

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 20535 18825 0 0 0.00% 0.00%
B 20535 18827 30 30 0.15% 0.16%
C 20535 18827 2 2 0.01% 0.01%
D 20535 18827 44 44 0.21% 0.23%

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 8 192 5651441 12476.8 2248 2197 452.8
A 8 144 60109 127.9 2248 2197 452.8
A 13 254 26400 53.45 2248 2197 452.8
B 7 220 259045 589.01 2260 2195 436.1
B 6 36 69881 155.22 2260 2195 436.1
B 0 197 69469 154.27 2260 2195 436.1
C 3 233 2090572 4083.75 2183 2194 511.4
C 14 238 337009 654.72 2183 2194 511.4
C 0 207 21603 37.95 2183 2194 511.4
D 10 66 274636 506.57 2218 2151 537.9
D 9 68 204463 376.11 2218 2151 537.9
D 11 176 112969 206.02 2218 2151 537.9

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