ASTROSAT CZTI

Data Quality Report

Orbit 37109

Creation date: 2024-06-27T21:35:39.280704
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/AS1A09_138T04_9000005282_37109cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37109cztM0_level2_quad_clean.evt
Size (bytes)1,359,109,440200,926,080
Size1.3 GB 191.6 MB
Events in quadrant A8,199,9561,270,495
Events in quadrant B9,709,9441,271,272
Events in quadrant C7,773,6851,263,398
Events in quadrant D14,411,6221,191,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343725
B0393174
C0325904
D0539594

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157821320.836396%
B157825853.706755%
C15782370.234444%
D15782279717.722722%

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 21275 15786 69 69 0.32% 0.44%
B 21275 15786 432 432 2.03% 2.74%
C 21275 15786 21 21 0.10% 0.13%
D 21275 15784 2703 2703 12.71% 17.12%

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 654741 1810.87 1806 1768 360.6
A 9 143 375900 1037.57 1806 1768 360.6
A 15 237 70971 191.92 1806 1768 360.6
B 5 184 1091023 3224.14 1775 1726 337.9
B 5 172 755738 2231.75 1775 1726 337.9
B 5 200 345980 1018.94 1775 1726 337.9
C 15 214 665448 1629.94 1760 1775 407.2
C 14 254 152610 370.44 1760 1775 407.2
C 0 10 35237 82.18 1760 1775 407.2
D 12 233 6161704 16354.87 1544 1501 376.7
D 13 249 894549 2370.97 1544 1501 376.7
D 13 171 585545 1550.59 1544 1501 376.7

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