ASTROSAT CZTI

Data Quality Report

Orbit 20200317_A07_067T01_9000003578_level2

Creation date: 2025-12-10T04:20:38.479576
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/AS1A07_067T01_9000003578cztM0_level2.fits modeM0/AS1A07_067T01_9000003578cztM0_level2_quad_clean.evt
Size (bytes)1,738,768,3201,422,930,240
Size1.6 GB 1.3 GB
Events in quadrant A11,003,0228,272,704
Events in quadrant B10,531,7828,323,544
Events in quadrant C10,562,0227,906,578
Events in quadrant D8,395,2326,438,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02770
B02780
C02780
D02780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036180
B036180
C036180
D036180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03671340
B03688720
C03942160
D06616400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17735521361.204364%
B17735425681.447952%
C17735448502.734644%
D1773543598420.289365%

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 226289 177342 0 0 0.00% 0.00%
B 226289 177334 0 0 0.00% 0.00%
C 226289 177329 0 0 0.00% 0.00%
D 226289 177036 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 10432 11.04 2866 2690 701.4
A 7 110 8891 8.84 2866 2690 701.4
A 9 19 8221 7.89 2866 2690 701.4
B 2 9 8583 10.93 2781 2654 542.2
B 2 8 7043 8.09 2781 2654 542.2
B 5 128 6826 7.69 2781 2654 542.2
C 12 241 7473 6.86 2793 2612 708.9
C 3 126 7186 6.45 2793 2612 708.9
C 9 209 7181 6.44 2793 2612 708.9
D 3 14 6178 6.3 2397 2183 634.3
D 6 231 5980 5.99 2397 2183 634.3
D 6 67 5815 5.73 2397 2183 634.3

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