ASTROSAT CZTI

Data Quality Report

Orbit 36435

Creation date: 2022-07-19T03:42:34.350934
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/AS1C07_009T01_9000005200_36435cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36435cztM0_level2_quad_clean.evt
Size (bytes)440,268,48065,041,920
Size419.9 MB 62.0 MB
Events in quadrant A2,633,204419,539
Events in quadrant B4,005,589413,881
Events in quadrant C3,224,357392,308
Events in quadrant D3,128,977390,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B0152282
C0125572
D0125562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5025100.199005%
B50253707.363184%
C50251763.502488%
D5025781.552239%

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 7148 5026 1 1 0.01% 0.02%
B 7148 5026 275 275 3.85% 5.47%
C 7148 5026 125 125 1.75% 2.49%
D 7148 5026 73 73 1.02% 1.45%

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 192755 1531.21 628 617 125.5
A 13 254 9107 67.66 628 617 125.5
A 9 143 8539 63.13 628 617 125.5
B 5 172 1134303 10149.08 603 589 111.7
B 0 189 242644 2166.89 603 589 111.7
B 5 255 124633 1110.45 603 589 111.7
C 3 233 351283 2639.74 586 592 132.9
C 0 10 333330 2504.6 586 592 132.9
C 15 214 215978 1621.27 586 592 132.9
D 12 235 263288 1847.91 599 584 142.2
D 12 16 119969 839.78 599 584 142.2
D 12 233 86424 603.82 599 584 142.2

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