ASTROSAT CZTI

Data Quality Report

Orbit 39466

Creation date: 2024-06-27T22:04:53.834089
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/AS1A12_044T16_9000005478_39466cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39466cztM0_level2_quad_clean.evt
Size (bytes)439,934,400100,598,400
Size419.6 MB 95.9 MB
Events in quadrant A3,311,603682,080
Events in quadrant B3,709,825685,004
Events in quadrant C5,293,925625,807
Events in quadrant D3,484,578617,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136583
B0151622
C0197582
D0146282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239220.352621%
B62391762.820965%
C62396099.761180%
D62391161.859272%

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 9106 6241 7 7 0.08% 0.11%
B 9106 6241 105 105 1.15% 1.68%
C 9106 6241 481 481 5.28% 7.71%
D 9106 6241 76 76 0.83% 1.22%

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 10 83 469647 3342.27 692 678 140.3
A 15 222 103959 736.07 692 678 140.3
A 15 174 26483 183.91 692 678 140.3
B 5 255 826217 6218.13 682 663 132.8
B 8 3 160948 1207.28 682 663 132.8
B 12 111 17275 125.12 682 663 132.8
C 15 208 2464906 16138.11 650 654 152.7
C 15 214 253774 1657.65 650 654 152.7
C 9 187 31137 199.63 650 654 152.7
D 2 249 402606 2437.13 671 652 164.9
D 2 153 160231 967.56 671 652 164.9
D 12 227 154945 935.51 671 652 164.9

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