ASTROSAT CZTI

Data Quality Report

Orbit 20230410_A12_066T01_9000005562_level2

Creation date: 2023-04-13T11:44:45.832236
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_066T01_9000005562cztM0_level2.fits modeM0/AS1A12_066T01_9000005562cztM0_level2_quad_clean.evt
Size (bytes)652,711,680701,363,520
Size622.5 MB 668.9 MB
Events in quadrant A4,119,2464,700,377
Events in quadrant B3,953,1224,704,953
Events in quadrant C3,333,1302,958,019
Events in quadrant D3,099,7323,632,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750410
B01649290
C03817660
D02226400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02790
B02790
C02790
D02790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015600
B015600
C015600
D015600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A764597300.954760%
B764598771.147020%
C764592567933.585320%
D764591444018.885939%

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 110272 76455 0 0 0.00% 0.00%
B 110272 76460 0 0 0.00% 0.00%
C 110272 76134 0 0 0.00% 0.00%
D 110272 75893 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 9 19 3396 8.77 1075 1005 272.7
A 7 110 3381 8.71 1075 1005 272.7
A 0 29 3285 8.36 1075 1005 272.7
B 2 9 3410 11.97 1046 997 201.6
B 3 80 2886 9.37 1046 997 201.6
B 3 17 2867 9.28 1046 997 201.6
C 1 81 2741 8.49 880 823 226.0
C 1 80 2673 8.18 880 823 226.0
C 3 203 2561 7.69 880 823 226.0
D 6 67 2327 5.7 901 820 264.2
D 10 189 2304 5.62 901 820 264.2
D 4 160 2301 5.61 901 820 264.2

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