ASTROSAT CZTI

Data Quality Report

Orbit 42551

Creation date: 2024-06-27T22:41:31.694200
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_102T01_9000005812_42551cztM0_level2.fits modeM0/AS1A12_102T01_9000005812_42551cztM0_level2_quad_clean.evt
Size (bytes)317,681,28091,641,600
Size303.0 MB 87.4 MB
Events in quadrant A3,047,105616,177
Events in quadrant B2,504,057622,807
Events in quadrant C2,555,252591,511
Events in quadrant D3,210,153546,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126652
B0116672
C0114252
D0137642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5684160.281492%
B5684270.475018%
C568330.052789%
D5683831.460496%

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 7118 5685 7 7 0.10% 0.12%
B 7118 5685 10 10 0.14% 0.18%
C 7117 5684 0 0 0.00% 0.00%
D 7117 5684 66 66 0.93% 1.16%

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 591244 4777.56 602 589 123.6
A 2 79 73019 585.86 602 589 123.6
A 0 247 18269 143.01 602 589 123.6
B 5 172 66459 565.89 596 579 116.4
B 0 245 36818 311.28 596 579 116.4
B 5 255 26923 226.29 596 579 116.4
C 15 214 238662 1750.82 586 588 136.0
C 14 254 24953 179.18 586 588 136.0
C 12 249 5354 35.05 586 588 136.0
D 1 52 176146 1228.8 585 566 142.9
D 2 16 155580 1084.87 585 566 142.9
D 12 233 145867 1016.89 585 566 142.9

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