ASTROSAT CZTI

Data Quality Report

Orbit 33847

Creation date: 2024-06-27T20:53:20.036006
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/AS1A11_065T11_9000004830_33847cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33847cztM0_level2_quad_clean.evt
Size (bytes)353,191,68058,553,280
Size336.8 MB 55.8 MB
Events in quadrant A1,913,046379,644
Events in quadrant B2,532,434373,194
Events in quadrant C2,083,034380,814
Events in quadrant D3,898,081359,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081522
B0101981
C085251
D0143881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396190.227215%
B39611814.569553%
C3961210.530169%
D39611864.695784%

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 5454 3962 6 6 0.11% 0.15%
B 5454 3962 122 122 2.24% 3.08%
C 5454 3962 16 16 0.29% 0.40%
D 5454 3962 128 128 2.35% 3.23%

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 15 169 83658 883.38 462 451 94.2
A 7 16 24326 253.47 462 451 94.2
A 13 6 12107 123.75 462 451 94.2
B 5 172 637780 7245.93 451 440 88.0
B 0 189 16600 183.72 451 440 88.0
B 4 232 15862 175.33 451 440 88.0
C 15 214 171882 1641.24 447 451 104.5
C 0 10 69228 658.46 447 451 104.5
C 3 233 32505 306.88 447 451 104.5
D 8 195 1077904 9237.57 438 429 116.6
D 12 235 401686 3440.12 438 429 116.6
D 2 250 215033 1839.87 438 429 116.6

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