ASTROSAT CZTI

Data Quality Report

Orbit 13794

Creation date: 2024-06-27T16:46:12.063651
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/AS1A04_199T01_9000002040_13794cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13794cztM0_level2_quad_clean.evt
Size (bytes)492,312,96072,607,680
Size469.5 MB 69.2 MB
Events in quadrant A3,490,743444,895
Events in quadrant B3,399,958456,732
Events in quadrant C3,188,983436,836
Events in quadrant D4,395,922413,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142163
B0137762
C0132892
D0173562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400570.890625%
B6400731.140625%
C6400250.390625%
D6400610.953125%

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 7746 6402 5 5 0.06% 0.08%
B 7746 6402 19 19 0.25% 0.30%
C 7746 6402 0 0 0.00% 0.00%
D 7746 6402 51 51 0.66% 0.80%

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 8 15 223581 1327.65 827 812 167.8
A 9 143 40695 237.69 827 812 167.8
A 1 162 19395 110.75 827 812 167.8
B 4 80 56119 354.14 833 815 156.2
B 0 214 31392 195.8 833 815 156.2
B 8 250 26533 164.68 833 815 156.2
C 3 233 65570 352.73 797 801 183.6
C 14 220 8070 39.59 797 801 183.6
C 13 61 5707 26.72 797 801 183.6
D 1 52 867674 4569.85 784 768 189.7
D 10 157 385600 2028.62 784 768 189.7
D 13 249 65727 342.43 784 768 189.7

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