ASTROSAT CZTI

Data Quality Report

Orbit 34774

Creation date: 2022-03-04T17:39:48.887481
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_004T01_9000004990_34774cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34774cztM0_level2_quad_clean.evt
Size (bytes)523,742,40083,047,680
Size499.5 MB 79.2 MB
Events in quadrant A2,752,716538,933
Events in quadrant B3,370,769549,928
Events in quadrant C3,091,996553,075
Events in quadrant D6,252,633466,911

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118603
B0135752
C0124742
D0224732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5801100.172384%
B58011392.396139%
C5801350.603344%
D580190815.652474%

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 7204 5802 3 3 0.04% 0.05%
B 7204 5802 73 73 1.01% 1.26%
C 7204 5802 22 22 0.31% 0.38%
D 7204 5802 770 770 10.69% 13.27%

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 49643 357.8 681 668 136.9
A 13 6 26948 191.99 681 668 136.9
A 15 174 21552 152.57 681 668 136.9
B 5 172 238063 1833.73 675 659 129.5
B 5 255 126020 968.3 675 659 129.5
B 5 200 105001 805.95 675 659 129.5
C 15 214 249786 1600.59 666 670 155.6
C 0 10 90002 573.97 666 670 155.6
C 14 67 72870 463.89 666 670 155.6
D 10 118 1922338 12520.06 627 610 153.5
D 8 195 1365433 8891.82 627 610 153.5
D 12 233 181618 1179.27 627 610 153.5

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