ASTROSAT CZTI

Data Quality Report

Orbit 34756

Creation date: 2022-03-04T09:36:31.564967
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_34756cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34756cztM0_level2_quad_clean.evt
Size (bytes)570,769,92047,940,480
Size544.3 MB 45.7 MB
Events in quadrant A2,551,067295,164
Events in quadrant B4,858,023295,854
Events in quadrant C2,890,314304,598
Events in quadrant D6,653,604210,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102173
B0174772
C0114082
D0231852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4915110.223805%
B491592318.779247%
C4915380.773143%
D4915131926.836216%

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 7069 4916 4 4 0.06% 0.08%
B 7069 4916 639 639 9.04% 13.00%
C 7069 4916 25 25 0.35% 0.51%
D 7069 4916 1092 1092 15.45% 22.21%

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 47734 370.99 638 629 127.0
A 15 223 18943 144.24 638 629 127.0
A 13 6 12828 96.08 638 629 127.0
B 5 255 2386023 21036.76 600 586 113.4
B 5 172 34084 295.41 600 586 113.4
B 0 190 28301 244.41 600 586 113.4
C 15 214 211811 1452.01 632 640 145.4
C 0 10 129160 883.7 632 640 145.4
C 14 67 63660 433.33 632 640 145.4
D 2 250 2794846 20620.8 558 544 135.5
D 8 195 432562 3188.11 558 544 135.5
D 12 6 364275 2684.18 558 544 135.5

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