ASTROSAT CZTI

Data Quality Report

Orbit 48228

Creation date: 2024-08-28T19:29:19.519047
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/AS1C09_008T01_9000006420_48228cztM0_level2.fits modeM0/AS1C09_008T01_9000006420_48228cztM0_level2_quad_clean.evt
Size (bytes)539,608,320116,763,840
Size514.6 MB 111.4 MB
Events in quadrant A7,674,057778,225
Events in quadrant B3,710,221802,590
Events in quadrant C3,336,756771,744
Events in quadrant D4,730,802713,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278671
B0155042
C0147201
D0186941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67474246.284274%
B67461492.208716%
C67471362.015711%
D67471402.074996%

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 7887 6747 68 68 0.86% 1.01%
B 7886 6746 22 22 0.28% 0.33%
C 7887 6747 62 62 0.79% 0.92%
D 7887 6747 119 119 1.51% 1.76%

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 4545022 28328.52 780 762 160.4
A 13 248 92378 571.12 780 762 160.4
A 13 254 13674 80.49 780 762 160.4
B 0 200 283880 1860.06 786 763 152.2
B 4 21 156378 1022.38 786 763 152.2
B 0 186 66400 431.23 786 763 152.2
C 12 2 279432 1557.96 771 775 178.9
C 12 249 16388 87.29 771 775 178.9
C 1 3 12937 68.0 771 775 178.9
D 2 165 832457 4281.4 777 751 194.3
D 12 221 612503 3149.13 777 751 194.3
D 2 249 104991 536.6 777 751 194.3

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