ASTROSAT CZTI

Data Quality Report

Orbit 42101

Creation date: 2024-06-27T22:36:50.902817
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_088T08_9000005748_42101cztM0_level2.fits modeM0/AS1A12_088T08_9000005748_42101cztM0_level2_quad_clean.evt
Size (bytes)476,064,00090,501,120
Size454.0 MB 86.3 MB
Events in quadrant A8,131,317510,932
Events in quadrant B2,779,080655,368
Events in quadrant C2,718,915617,160
Events in quadrant D3,540,722549,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282422
B0123722
C0117932
D0147922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5819140424.127857%
B5819450.773329%
C5819130.223406%
D58202444.192440%

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 9494 5821 1273 1273 13.41% 21.87%
B 9494 5821 26 26 0.27% 0.45%
C 9494 5821 8 8 0.08% 0.14%
D 9495 5822 188 188 1.98% 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 15 222 5232473 41659.52 605 591 125.6
A 10 83 550432 4378.18 605 591 125.6
A 3 137 6846 49.81 605 591 125.6
B 5 255 221848 1795.65 634 616 123.2
B 4 81 25816 204.54 634 616 123.2
B 3 112 22695 179.21 634 616 123.2
C 15 214 241837 1652.99 621 623 145.9
C 15 159 43548 294.16 621 623 145.9
C 15 111 7702 48.51 621 623 145.9
D 12 6 716081 4821.91 607 589 148.4
D 2 249 217460 1461.56 607 589 148.4
D 13 249 144767 971.66 607 589 148.4

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