ASTROSAT CZTI

Data Quality Report

Orbit 41020

Creation date: 2024-06-27T22:23:21.112874
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/AS1A12_029T02_9000005590_41020cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41020cztM0_level2_quad_clean.evt
Size (bytes)313,977,60090,780,480
Size299.4 MB 86.6 MB
Events in quadrant A3,042,409603,609
Events in quadrant B2,466,823621,406
Events in quadrant C2,678,776597,060
Events in quadrant D2,998,808535,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124832
B0112601
C0113901
D0128471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A558740.071595%
B558740.071595%
C558770.125291%
D55871432.559513%

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 7170 5588 2 2 0.03% 0.04%
B 7170 5588 0 0 0.00% 0.00%
C 7170 5588 7 7 0.10% 0.13%
D 7170 5588 117 117 1.63% 2.09%

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 470658 3687.48 618 606 127.5
A 12 189 158202 1236.31 618 606 127.5
A 2 79 10541 77.94 618 606 127.5
B 0 190 41917 343.24 614 597 120.4
B 12 111 15827 126.51 614 597 120.4
B 11 111 14729 117.39 614 597 120.4
C 15 214 240637 1704.32 601 603 140.8
C 12 249 31351 218.32 601 603 140.8
C 0 10 28147 195.57 601 603 140.8
D 13 249 419125 2857.73 596 578 146.5
D 13 171 93091 631.65 596 578 146.5
D 12 79 62418 422.23 596 578 146.5

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