ASTROSAT CZTI

Data Quality Report

Orbit 27907

Creation date: 2024-06-27T19:45:50.545152
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_048T06_9000004030_27907cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27907cztM0_level2_quad_clean.evt
Size (bytes)522,872,640121,187,520
Size498.7 MB 115.6 MB
Events in quadrant A3,263,706848,503
Events in quadrant B3,647,354855,192
Events in quadrant C3,364,792788,169
Events in quadrant D5,150,097756,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135430
B0148980
C0137800
D0196000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035871.441591%
B60351472.435791%
C60351272.104391%
D60363585.931080%

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 7345 6035 0 0 0.00% 0.00%
B 7345 6035 36 36 0.49% 0.60%
C 7345 6035 14 14 0.19% 0.23%
D 7346 6036 298 298 4.06% 4.94%

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 13 254 10212 55.9 845 834 167.8
A 3 137 7387 39.06 845 834 167.8
A 0 226 7356 38.88 845 834 167.8
B 0 229 223614 1439.06 829 812 154.8
B 10 245 73439 469.09 829 812 154.8
B 0 230 43498 275.71 829 812 154.8
C 14 238 130060 722.64 779 786 178.9
C 3 233 99824 553.62 779 786 178.9
C 15 208 72073 398.5 779 786 178.9
D 1 52 1268398 6898.86 785 764 183.7
D 8 195 798148 4339.61 785 764 183.7
D 2 250 82506 444.86 785 764 183.7

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