ASTROSAT CZTI

Data Quality Report

Orbit 11555

Creation date: 2024-06-27T16:14:42.492906
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/AS1G08_009T01_9000001692_11555cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11555cztM0_level2_quad_clean.evt
Size (bytes)716,382,720108,411,840
Size683.2 MB 103.4 MB
Events in quadrant A5,294,107689,164
Events in quadrant B5,571,969692,702
Events in quadrant C3,631,888704,471
Events in quadrant D6,657,699641,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212163
B0219733
C0164743
D0252313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79833474.346737%
B79834715.900038%
C7983410.513591%
D79836548.192409%

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 8534 7987 82 82 0.96% 1.03%
B 8534 7987 180 180 2.11% 2.25%
C 8534 7987 0 0 0.00% 0.00%
D 8534 7987 391 391 4.58% 4.90%

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 8 5 1119155 5756.28 950 927 194.3
A 1 162 132417 676.87 950 927 194.3
A 9 143 118966 607.63 950 927 194.3
B 4 239 1022494 5575.01 950 927 183.2
B 15 204 522154 2844.5 950 927 183.2
B 11 51 103958 562.27 950 927 183.2
C 13 61 7023 27.93 931 935 218.0
C 3 202 2183 5.72 931 935 218.0
C -1 -1 -1 -1.0 931 935 218.0
D 13 137 2042897 9339.95 899 872 218.6
D 1 52 756238 3454.94 899 872 218.6
D 2 120 173147 787.96 899 872 218.6

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