ASTROSAT CZTI

Data Quality Report

Orbit 35525

Creation date: 2022-04-24T10:55:13.896290
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_097T09_9000005086_35525cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35525cztM0_level2_quad_clean.evt
Size (bytes)423,391,68053,907,840
Size403.8 MB 51.4 MB
Events in quadrant A2,803,283321,724
Events in quadrant B3,109,122328,289
Events in quadrant C3,290,676310,757
Events in quadrant D3,250,959291,628

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116603
B0126282
C0130672
D0132722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541680.147710%
B5416611.126292%
C54161081.994092%
D54161673.083456%

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 9540 5418 0 0 0.00% 0.00%
B 9540 5418 25 25 0.26% 0.46%
C 9540 5418 90 90 0.94% 1.66%
D 9540 5418 112 112 1.17% 2.07%

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 148349 1132.83 645 630 130.4
A 10 83 134828 1029.14 645 630 130.4
A 9 143 16785 123.89 645 630 130.4
B 5 236 479905 3855.7 639 622 124.3
B 5 172 87418 698.25 639 622 124.3
B 12 111 15605 120.53 639 622 124.3
C 0 10 379659 2635.66 618 622 143.8
C 15 214 226787 1572.65 618 622 143.8
C 0 207 132355 916.01 618 622 143.8
D 2 250 302160 2027.18 612 595 148.8
D 13 249 289040 1938.99 612 595 148.8
D 10 199 104948 701.48 612 595 148.8

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