ASTROSAT CZTI

Data Quality Report

Orbit 20240624_A13_025T01_9000006312_level2

Creation date: 2024-06-28T13:29:57.015271
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/AS1A13_025T01_9000006312cztM0_level2.fits modeM0/AS1A13_025T01_9000006312cztM0_level2_quad_clean.evt
Size (bytes)1,309,403,5201,306,339,200
Size1.2 GB 1.2 GB
Events in quadrant A6,524,0457,421,152
Events in quadrant B8,453,0818,561,430
Events in quadrant C8,744,9607,997,863
Events in quadrant D7,058,7546,724,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02210
C02190
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05319470
B02937720
C02753300
D04744360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027450
B027460
C027600
D027560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12769198657.725682%
B12969327392.111910%
C12993914441.111291%
D1287021906014.809405%

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 201129 128513 0 0 0.00% 0.00%
B 201129 132388 0 0 0.00% 0.00%
C 201129 132752 0 0 0.00% 0.00%
D 201129 130461 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 7 110 5449 8.83 1701 1584 437.7
A 0 29 5003 7.81 1701 1584 437.7
A 14 95 4978 7.75 1701 1584 437.7
B 2 9 6494 10.93 2259 2166 395.9
B 2 8 5439 8.27 2259 2166 395.9
B 3 17 5239 7.76 2259 2166 395.9
C 3 202 5847 6.75 2326 2232 535.4
C 3 203 5573 6.24 2326 2232 535.4
C 3 187 5343 5.81 2326 2232 535.4
D 15 63 4475 5.13 2047 1890 504.0
D 7 3 4451 5.08 2047 1890 504.0
D 12 6 4431 5.04 2047 1890 504.0

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