ASTROSAT CZTI

Data Quality Report

Orbit 33671

Creation date: 2024-06-27T20:51:20.240705
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/AS1T04_076T01_9000004810_33671cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33671cztM0_level2_quad_clean.evt
Size (bytes)684,751,68077,276,160
Size653.0 MB 73.7 MB
Events in quadrant A9,789,504220,673
Events in quadrant B3,142,973602,419
Events in quadrant C3,216,511611,433
Events in quadrant D4,258,290561,209

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323363
B0123992
C0127092
D0162762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4887406483.159402%
B48872434.972376%
C48871202.455494%
D48871793.662779%

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 6979 4887 3448 3448 49.41% 70.55%
B 6979 4888 184 184 2.64% 3.76%
C 6979 4888 106 106 1.52% 2.17%
D 6979 4888 183 183 2.62% 3.74%

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 15 169 8578180 169797.99 245 241 50.5
A 15 237 249931 4942.55 245 241 50.5
A 9 143 5196 98.08 245 241 50.5
B 5 172 689343 6089.95 597 583 113.1
B 4 81 27221 235.53 597 583 113.1
B 5 255 20320 174.51 597 583 113.1
C 3 233 379634 2782.34 594 601 136.2
C 0 10 285041 2087.97 594 601 136.2
C 15 214 226265 1656.52 594 601 136.2
D 8 195 836272 5393.68 574 563 154.9
D 1 52 370246 2385.94 574 563 154.9
D 8 230 352726 2272.86 574 563 154.9

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