ASTROSAT CZTI

Data Quality Report

Orbit 29127

Creation date: 2024-06-27T20:00:35.518450
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_099T01_9000004184_29127cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29127cztM0_level2_quad_clean.evt
Size (bytes)532,509,120106,488,000
Size507.8 MB 101.6 MB
Events in quadrant A3,598,193689,575
Events in quadrant B3,785,347702,543
Events in quadrant C3,705,096668,387
Events in quadrant D4,530,088643,310

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155913
B0160942
C0156022
D0185062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7489340.453999%
B7489650.867940%
C7489680.907998%
D74892152.870877%

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 8029 7490 5 5 0.06% 0.07%
B 8029 7490 5 5 0.06% 0.07%
C 8029 7490 1 1 0.01% 0.01%
D 8029 7490 205 205 2.55% 2.74%

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 15 174 31064 161.88 924 906 186.3
A 13 254 11708 57.98 924 906 186.3
A 3 137 9195 44.49 924 906 186.3
B 10 246 68030 376.2 922 899 178.4
B 10 245 44981 247.03 922 899 178.4
B 0 190 27319 148.06 922 899 178.4
C 14 238 146109 694.0 887 896 209.2
C 3 233 72615 342.76 887 896 209.2
C 2 114 17625 79.95 887 896 209.2
D 1 52 675200 3176.31 882 860 212.3
D 8 195 429004 2016.66 882 860 212.3
D 2 120 48513 224.46 882 860 212.3

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