ASTROSAT CZTI

Data Quality Report

Orbit 43678

Creation date: 2024-06-27T22:54:25.484422
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_018T01_9000005896_43678cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43678cztM0_level2_quad_clean.evt
Size (bytes)938,053,44090,596,160
Size894.6 MB 86.4 MB
Events in quadrant A10,027,174675,935
Events in quadrant B4,283,961688,511
Events in quadrant C11,488,160430,872
Events in quadrant D8,468,901531,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338961
B0166851
C0381191
D0293111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916116219.641650%
B59174557.689708%
C5917355660.098023%
D5917186231.468650%

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 6971 5918 707 707 10.14% 11.95%
B 6972 5919 341 341 4.89% 5.76%
C 6972 5919 3193 3193 45.80% 53.94%
D 6972 5919 1632 1632 23.41% 27.57%

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 6459141 48741.7 651 638 132.5
A 10 83 777088 5859.79 651 638 132.5
A 14 63 153288 1152.03 651 638 132.5
B 10 244 534195 4229.82 658 638 126.1
B 4 206 501996 3974.56 658 638 126.1
B 15 54 213143 1684.65 658 638 126.1
C 15 142 7865212 75975.18 442 444 103.5
C 15 158 1099618 10618.23 442 444 103.5
C 15 157 581042 5608.69 442 444 103.5
D 13 187 2418240 15695.81 589 568 154.0
D 1 52 657784 4266.72 589 568 154.0
D 7 80 552805 3585.19 589 568 154.0

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