ASTROSAT CZTI

Data Quality Report

Orbit 20230729_C06_010T01_9000005800_level2

Creation date: 2023-08-03T11:33:15.700713
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/AS1C06_010T01_9000005800cztM0_level2.fits modeM0/AS1C06_010T01_9000005800cztM0_level2_quad_clean.evt
Size (bytes)1,111,152,9601,748,220,480
Size1.0 GB 1.6 GB
Events in quadrant A6,657,72011,652,015
Events in quadrant B6,268,34011,396,989
Events in quadrant C6,463,91811,109,276
Events in quadrant D5,566,38410,104,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04740
C04740
D04740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02761930
B02772750
C02770360
D03383430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025900
B025900
C025900
D025900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1268553900.307438%
B12685515431.216349%
C12685513911.096528%
D12685456314.438961%

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 192495 126854 0 0 0.00% 0.00%
B 192495 126840 0 0 0.00% 0.00%
C 192495 126835 0 0 0.00% 0.00%
D 192495 126763 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 5626 9.25 1738 1636 431.4
A 7 110 5610 9.21 1738 1636 431.4
A 0 29 5489 8.93 1738 1636 431.4
B 2 9 5339 11.86 1663 1591 315.9
B 3 80 4562 9.4 1663 1591 315.9
B 2 8 4343 8.71 1663 1591 315.9
C 1 81 5454 8.88 1709 1603 433.8
C 1 80 5251 8.41 1709 1603 433.8
C 3 203 5225 8.35 1709 1603 433.8
D 7 3 4327 6.73 1599 1459 426.4
D 4 160 4271 6.6 1599 1459 426.4
D 10 189 4178 6.38 1599 1459 426.4

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