ASTROSAT CZTI

Data Quality Report

Orbit 42494

Creation date: 2024-06-27T22:40:51.164569
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/AS1C07_001T10_9000005806_42494cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42494cztM0_level2_quad_clean.evt
Size (bytes)374,892,48090,236,160
Size357.5 MB 86.1 MB
Events in quadrant A3,068,554617,171
Events in quadrant B3,393,672607,281
Events in quadrant C2,720,527599,785
Events in quadrant D4,246,083505,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125862
B0142512
C0118852
D0169092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5759140.243098%
B57591592.760896%
C575850.086836%
D575865311.340743%

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 7071 5760 7 7 0.10% 0.12%
B 7071 5760 116 116 1.64% 2.01%
C 7070 5759 4 4 0.06% 0.07%
D 7070 5759 570 570 8.06% 9.90%

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 622623 5028.53 603 591 123.7
A 12 189 82319 660.69 603 591 123.7
A 13 6 17039 132.97 603 591 123.7
B 5 255 693401 6161.91 591 574 112.4
B 10 246 130527 1155.78 591 574 112.4
B 5 172 86785 766.75 591 574 112.4
C 15 214 238096 1715.02 590 592 138.5
C 9 54 124021 891.28 590 592 138.5
C 14 254 32286 228.86 590 592 138.5
D 9 19 743843 5476.83 553 536 135.7
D 2 249 689582 5077.03 553 536 135.7
D 10 118 320716 2359.15 553 536 135.7

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