ASTROSAT CZTI

Data Quality Report

Orbit 19308

Creation date: 2024-06-27T18:01:13.016316
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_204T01_9000002856_19308cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19308cztM0_level2_quad_clean.evt
Size (bytes)580,682,880113,385,600
Size553.8 MB 108.1 MB
Events in quadrant A3,160,191794,548
Events in quadrant B3,237,286790,963
Events in quadrant C3,146,982753,507
Events in quadrant D7,639,910680,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131461
B0134111
C0130131
D0268591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5936801.347709%
B5937781.313795%
C59371081.819101%
D5937124721.003874%

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 7261 5936 2 2 0.03% 0.03%
B 7262 5937 2 2 0.03% 0.03%
C 7262 5937 0 0 0.00% 0.00%
D 7262 5937 1110 1110 15.29% 18.70%

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 4 2 41335 252.22 810 795 160.7
A 0 226 7174 39.69 810 795 160.7
A 13 254 7168 39.65 810 795 160.7
B 0 229 42600 286.16 792 776 146.2
B 0 190 32838 219.37 792 776 146.2
B 15 19 19080 125.24 792 776 146.2
C 14 238 120833 672.92 771 777 178.4
C 3 233 9513 48.97 771 777 178.4
C 9 54 8844 45.22 771 777 178.4
D 7 238 2535891 14137.44 745 727 179.3
D 1 52 963317 5367.92 745 727 179.3
D 11 176 717851 3999.07 745 727 179.3

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