ASTROSAT CZTI

Data Quality Report

Orbit 41834

Creation date: 2024-06-27T22:33:23.546474
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_099T04_9000005708_41834cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41834cztM0_level2_quad_clean.evt
Size (bytes)410,258,88083,816,640
Size391.3 MB 79.9 MB
Events in quadrant A5,544,577465,698
Events in quadrant B2,373,803624,872
Events in quadrant C3,291,475554,506
Events in quadrant D3,565,454523,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198882
B0107402
C0128892
D0142412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5276127324.128127%
B527680.151630%
C52762675.060652%
D52762845.382866%

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 7099 5277 965 965 13.59% 18.29%
B 7099 5277 3 3 0.04% 0.06%
C 7099 5277 258 258 3.63% 4.89%
D 7099 5277 272 272 3.83% 5.15%

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 14 24 3084211 29955.65 500 490 102.9
A 10 83 462238 4485.48 500 490 102.9
A 15 223 26492 252.59 500 490 102.9
B 5 255 41659 365.98 582 566 112.3
B 15 35 32110 280.94 582 566 112.3
B 12 111 13730 117.24 582 566 112.3
C 0 10 834810 6466.59 553 557 129.0
C 15 214 210305 1625.83 553 557 129.0
C 14 254 87326 672.58 553 557 129.0
D 2 249 517123 3805.99 561 545 135.7
D 13 249 474590 3492.62 561 545 135.7
D 12 6 225184 1655.07 561 545 135.7

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