ASTROSAT CZTI

Data Quality Report

Orbit 35697

Creation date: 2022-05-10T15:13:20.566844
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/AS1A09_142T02_9000005112_35697cztM0_level2.evt modeM0/AS1A09_142T02_9000005112_35697cztM0_level2_quad_clean.evt
Size (bytes)362,088,00072,495,360
Size345.3 MB 69.1 MB
Events in quadrant A2,462,846467,743
Events in quadrant B2,841,500470,703
Events in quadrant C2,762,658461,597
Events in quadrant D2,562,022448,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103903
B0114942
C0110102
D0107512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495160.121188%
B4951661.333064%
C4951851.716825%
D4951220.444355%

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 7073 4952 0 0 0.00% 0.00%
B 7073 4952 44 44 0.62% 0.89%
C 7073 4952 63 63 0.89% 1.27%
D 7073 4952 19 19 0.27% 0.38%

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 142087 1183.7 597 588 119.5
A 8 6 7474 57.6 597 588 119.5
A 3 137 5803 43.63 597 588 119.5
B 5 172 381697 3413.5 591 575 111.7
B 5 255 64852 575.69 591 575 111.7
B 4 81 21471 187.15 591 575 111.7
C 0 10 253383 1857.82 583 589 136.1
C 15 214 209437 1534.85 583 589 136.1
C 1 23 21692 155.09 583 589 136.1
D 13 249 95225 665.48 585 569 142.2
D 2 250 60333 420.17 585 569 142.2
D 12 6 43547 302.16 585 569 142.2

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