ASTROSAT CZTI

Data Quality Report

Orbit 17891

Creation date: 2024-06-27T17:42:15.580646
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/AS1T03_075T01_9000002660_17891cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17891cztM0_level2_quad_clean.evt
Size (bytes)446,307,840102,162,240
Size425.6 MB 97.4 MB
Events in quadrant A3,098,094664,897
Events in quadrant B3,337,528690,131
Events in quadrant C3,255,190665,369
Events in quadrant D3,406,344642,773

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132032
B0138382
C0135112
D0142802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170621.004862%
B61701151.863857%
C61701071.734198%
D6170600.972447%

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 7490 6171 0 0 0.00% 0.00%
B 7490 6171 3 3 0.04% 0.05%
C 7490 6171 0 0 0.00% 0.00%
D 7490 6171 10 10 0.13% 0.16%

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 6 16 7932 44.1 803 786 162.0
A 0 226 6916 37.83 803 786 162.0
A 12 194 5960 31.93 803 786 162.0
B 0 189 75155 485.87 814 796 153.0
B 0 197 34012 217.04 814 796 153.0
B 12 111 17516 109.25 814 796 153.0
C 14 238 122355 666.91 787 793 182.3
C 3 233 37547 201.64 787 793 182.3
C 5 218 23519 124.68 787 793 182.3
D 12 110 169775 888.59 786 766 190.2
D 1 52 70100 364.53 786 766 190.2
D 13 168 67551 351.13 786 766 190.2

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