ASTROSAT CZTI

Data Quality Report

Orbit 20170219_G06_164T01_9000001040_level2

Creation date: 2025-11-09T16:57:39.965156
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_164T01_9000001040cztM0_level2.fits modeM0/AS1G06_164T01_9000001040cztM0_level2_quad_clean.evt
Size (bytes)360,869,760359,219,520
Size344.2 MB 342.6 MB
Events in quadrant A2,184,0022,153,413
Events in quadrant B2,117,1802,183,949
Events in quadrant C2,136,4742,036,722
Events in quadrant D1,853,0181,866,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07800
B07800
C07800
D07800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0786900
B0790190
C0803460
D0874850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384283140.817113%
B384283360.874362%
C384283851.001874%
D384287651.990736%

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 44838 38424 0 0 0.00% 0.00%
B 44838 38423 0 0 0.00% 0.00%
C 44838 38424 0 0 0.00% 0.00%
D 44838 38409 0 0 0.00% 0.00%

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 0 29 2088 10.69 568 532 145.6
A 7 110 1844 9.01 568 532 145.6
A 0 30 1718 8.15 568 532 145.6
B 2 9 1885 12.04 558 532 112.4
B 2 8 1445 8.12 558 532 112.4
B 14 254 1427 7.96 558 532 112.4
C 1 80 1589 7.18 564 523 148.5
C 1 81 1567 7.03 564 523 148.5
C 12 241 1553 6.94 564 523 148.5
D 3 14 1359 6.24 528 480 140.8
D 6 231 1358 6.23 528 480 140.8
D 10 189 1309 5.89 528 480 140.8

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