ASTROSAT CZTI

Data Quality Report

Orbit 35943

Creation date: 2022-06-09T03:58:03.890057
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/AS1A11_080T01_9000005146_35943cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35943cztM0_level2_quad_clean.evt
Size (bytes)432,434,88062,130,240
Size412.4 MB 59.3 MB
Events in quadrant A2,618,532405,529
Events in quadrant B4,372,192380,314
Events in quadrant C2,863,001381,191
Events in quadrant D2,915,148375,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104303
B0160592
C0111282
D0114952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A481460.124636%
B481467714.063149%
C48141092.264229%
D4814741.537183%

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 6966 4815 0 0 0.00% 0.00%
B 6966 4815 439 439 6.30% 9.12%
C 6966 4815 83 83 1.19% 1.72%
D 6966 4815 50 50 0.72% 1.04%

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 161210 1269.07 629 618 126.5
A 15 169 15516 117.73 629 618 126.5
A 13 254 8098 59.11 629 618 126.5
B 5 172 1578062 14374.84 582 571 109.7
B 0 213 240388 2185.33 582 571 109.7
B 4 171 192588 1749.75 582 571 109.7
C 0 10 341578 2545.18 588 595 134.0
C 15 214 203038 1511.08 588 595 134.0
C 14 128 13575 96.89 588 595 134.0
D 8 195 136094 931.17 600 585 145.5
D 13 249 133778 915.25 600 585 145.5
D 2 250 99238 677.91 600 585 145.5

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