ASTROSAT CZTI

Data Quality Report

Orbit 21220

Creation date: 2024-06-27T18:25:08.343236
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/AS1A06_005T05_9000003136_21220cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21220cztM0_level2_quad_clean.evt
Size (bytes)493,326,72098,127,360
Size470.5 MB 93.6 MB
Events in quadrant A3,500,085648,812
Events in quadrant B3,355,875666,683
Events in quadrant C3,366,370623,165
Events in quadrant D4,293,066595,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143052
B0139472
C0139342
D0168472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263610.973974%
B6263661.053808%
C62621021.628873%
D62622033.241776%

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 7663 6264 3 3 0.04% 0.05%
B 7663 6265 8 8 0.10% 0.13%
C 7662 6264 7 7 0.09% 0.11%
D 7662 6264 153 153 2.00% 2.44%

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 11 47 250515 1519.62 826 813 164.3
A 15 236 53054 317.92 826 813 164.3
A 13 254 9874 55.14 826 813 164.3
B 3 64 38835 246.32 827 811 154.4
B 0 219 20850 129.81 827 811 154.4
B 12 111 16953 104.57 827 811 154.4
C 3 233 164120 909.79 777 782 179.5
C 14 238 124158 687.21 777 782 179.5
C 0 10 27674 149.79 777 782 179.5
D 7 238 456099 2401.71 781 760 189.6
D 1 239 376514 1981.93 781 760 189.6
D 1 20 159896 839.37 781 760 189.6

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