ASTROSAT CZTI

Data Quality Report

Orbit 07303

Creation date: 2024-06-27T15:18:14.337714
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/AS1G06_137T02_9000001002_07303cztM0_level2.evt modeM0/AS1G06_137T02_9000001002_07303cztM0_level2_quad_clean.evt
Size (bytes)1,267,931,520202,631,040
Size1.2 GB 193.2 MB
Events in quadrant A8,996,0561,216,150
Events in quadrant B8,915,9751,237,543
Events in quadrant C8,813,8691,223,697
Events in quadrant D10,408,1991,170,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390774
B0389983
C0392023
D0441813

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187072691.437964%
B187072501.336398%
C187072821.507457%
D187075172.763671%

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 20402 18707 8 8 0.04% 0.04%
B 20402 18707 8 8 0.04% 0.04%
C 20402 18707 60 60 0.29% 0.32%
D 20402 18707 238 238 1.17% 1.27%

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 8 15 455763 1016.94 2184 2132 446.1
A 3 1 50602 108.66 2184 2132 446.1
A 14 111 36526 77.1 2184 2132 446.1
B 0 214 259949 609.16 2202 2151 423.2
B 4 81 83150 191.39 2202 2151 423.2
B 12 111 43439 97.56 2202 2151 423.2
C 1 16 237667 476.22 2125 2133 494.6
C 7 247 184631 368.99 2125 2133 494.6
C 9 68 76941 151.25 2125 2133 494.6
D 2 216 1322506 2528.82 2120 2052 522.2
D 2 14 448343 854.7 2120 2052 522.2
D 14 34 239733 455.19 2120 2052 522.2

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