ASTROSAT CZTI

Data Quality Report

Orbit 33754

Creation date: 2024-06-27T20:52:16.736700
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_086T01_9000004820_33754cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33754cztM0_level2_quad_clean.evt
Size (bytes)515,577,60053,974,080
Size491.7 MB 51.5 MB
Events in quadrant A3,086,101321,402
Events in quadrant B3,489,633317,039
Events in quadrant C3,656,306311,169
Events in quadrant D5,013,196302,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125893
B0138252
C0143472
D0186922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5450781.431193%
B54501412.587156%
C54501352.477064%
D5450811.486239%

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 7334 5451 41 41 0.56% 0.75%
B 7334 5451 94 94 1.28% 1.72%
C 7334 5451 120 120 1.64% 2.20%
D 7334 5451 62 62 0.85% 1.14%

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 304393 2175.55 702 690 139.6
A 9 191 30921 216.56 702 690 139.6
A 15 237 18524 127.75 702 690 139.6
B 5 172 276768 2128.46 692 676 129.7
B 5 255 209191 1607.49 692 676 129.7
B 0 199 67708 516.77 692 676 129.7
C 9 187 334960 2144.64 678 686 155.9
C 15 214 239328 1531.08 678 686 155.9
C 14 254 190633 1218.67 678 686 155.9
D 8 195 1843156 10913.43 684 662 168.8
D 2 250 151856 895.55 684 662 168.8
D 1 47 69594 408.3 684 662 168.8

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