ASTROSAT CZTI

Data Quality Report

Orbit 38479

Creation date: 2024-06-27T21:53:19.179420
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_018T01_9000005386_38479cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38479cztM0_level2_quad_clean.evt
Size (bytes)348,863,04087,373,440
Size332.7 MB 83.3 MB
Events in quadrant A2,637,309601,065
Events in quadrant B2,992,857594,187
Events in quadrant C2,431,709574,571
Events in quadrant D4,452,929516,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109952
B0123121
C0104031
D0169211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A512480.156128%
B51241362.654176%
C512460.117096%
D51242605.074161%

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 7067 5125 4 4 0.06% 0.08%
B 7067 5125 113 113 1.60% 2.20%
C 7067 5125 5 5 0.07% 0.10%
D 7067 5125 201 201 2.84% 3.92%

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 345732 2978.26 567 554 115.9
A 0 8 40909 348.19 567 554 115.9
A 6 10 16992 141.83 567 554 115.9
B 5 184 411902 3859.69 561 547 106.6
B 4 171 83001 773.66 561 547 106.6
B 0 183 72571 675.79 561 547 106.6
C 15 214 210430 1612.6 556 559 130.1
C 14 254 21127 158.04 556 559 130.1
C 0 10 18781 140.01 556 559 130.1
D 2 16 1219463 9186.61 548 532 132.7
D 10 118 327741 2466.05 548 532 132.7
D 13 249 186420 1400.97 548 532 132.7

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