ASTROSAT CZTI

Data Quality Report

Orbit 35303

Creation date: 2022-04-09T10:25:48.120443
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/AS1T05_023T01_9000005058_35303cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35303cztM0_level2_quad_clean.evt
Size (bytes)551,234,88068,581,440
Size525.7 MB 65.4 MB
Events in quadrant A2,828,187462,747
Events in quadrant B7,317,909348,003
Events in quadrant C3,050,242459,354
Events in quadrant D3,142,376438,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118353
B0253422
C0121542
D0128212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5243130.247950%
B5243195737.325958%
C5243821.563990%
D52431362.593935%

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 7126 5244 9 9 0.13% 0.17%
B 7126 5244 1549 1549 21.74% 29.54%
C 7126 5244 73 73 1.02% 1.39%
D 7126 5244 105 105 1.47% 2.00%

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 285054 2252.35 622 611 126.3
A 10 83 94569 744.0 622 611 126.3
A 7 16 27553 213.34 622 611 126.3
B 5 236 3073714 31156.68 515 501 98.6
B 5 172 2203704 22336.4 515 501 98.6
B 4 232 13091 127.64 515 501 98.6
C 0 10 464347 3393.47 597 603 136.7
C 15 214 220002 1605.47 597 603 136.7
C 3 233 33792 242.86 597 603 136.7
D 7 80 439469 3047.75 594 577 144.0
D 8 195 171023 1183.61 594 577 144.0
D 13 249 159371 1102.69 594 577 144.0

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