ASTROSAT CZTI

Data Quality Report

Orbit 07550

Creation date: 2024-06-27T15:21:25.630455
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/AS1G06_164T01_9000001040_07550cztM0_level2.evt modeM0/AS1G06_164T01_9000001040_07550cztM0_level2_quad_clean.evt
Size (bytes)1,235,491,200242,945,280
Size1.2 GB 231.7 MB
Events in quadrant A8,498,7011,523,106
Events in quadrant B8,712,9781,562,083
Events in quadrant C8,546,5841,528,418
Events in quadrant D10,376,5881,439,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384315
B0387504
C0387334
D0443704

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189511200.633212%
B189511520.802068%
C18951770.406311%
D189514842.553955%

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 21806 18954 0 0 0.00% 0.00%
B 21806 18953 8 8 0.04% 0.04%
C 21806 18954 9 9 0.04% 0.05%
D 21806 18954 342 342 1.57% 1.80%

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 0 226 20818 42.02 2194 2143 444.5
A 12 194 19178 38.33 2194 2143 444.5
A 13 14 19038 38.01 2194 2143 444.5
B 12 111 42820 97.15 2216 2158 418.6
B 10 246 38992 88.0 2216 2158 418.6
B 0 214 35421 79.47 2216 2158 418.6
C 9 68 78953 154.74 2142 2150 496.3
C 8 229 64793 126.21 2142 2150 496.3
C 1 16 39922 76.1 2142 2150 496.3
D 2 152 1182558 2279.21 2120 2048 517.9
D 2 14 579347 1114.59 2120 2048 517.9
D 13 169 148618 282.98 2120 2048 517.9

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