ASTROSAT CZTI

Data Quality Report

Orbit 20221230_A12_095T01_9000005450_level2

Creation date: 2023-01-03T13:52:54.337803
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/AS1A12_095T01_9000005450cztM0_level2.fits modeM0/AS1A12_095T01_9000005450cztM0_level2_quad_clean.evt
Size (bytes)252,555,840192,458,880
Size240.9 MB 183.5 MB
Events in quadrant A1,623,6881,091,556
Events in quadrant B1,509,1041,091,007
Events in quadrant C1,564,8181,042,262
Events in quadrant D1,029,056686,172

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642610
B0673560
C0568230
D01717060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05700
B05700
C05700
D05700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278544571.640698%
B2785411113.988655%
C27854230.082573%
D278541360548.843972%

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 51405 27853 0 0 0.00% 0.00%
B 51405 27826 0 0 0.00% 0.00%
C 51405 27854 0 0 0.00% 0.00%
D 51405 27816 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 1292 8.42 424 399 106.1
A 9 19 1275 8.26 424 399 106.1
A 7 110 1271 8.22 424 399 106.1
B 2 9 1237 10.72 400 384 79.5
B 3 80 1174 9.93 400 384 79.5
B 3 17 1052 8.4 400 384 79.5
C 1 81 1254 8.15 414 389 106.2
C 1 80 1229 7.91 414 389 106.2
C 1 65 1092 6.62 414 389 106.2
D 7 3 781 6.51 294 270 78.5
D 10 189 779 6.48 294 270 78.5
D 4 160 753 6.15 294 270 78.5

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