ASTROSAT CZTI

Data Quality Report

Orbit 13288

Creation date: 2024-06-27T16:38:50.139565
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/AS1T02_013T01_9000001976_13288cztM0_level2.evt modeM0/AS1T02_013T01_9000001976_13288cztM0_level2_quad_clean.evt
Size (bytes)629,326,08084,576,960
Size600.2 MB 80.7 MB
Events in quadrant A3,229,282614,368
Events in quadrant B6,421,323343,947
Events in quadrant C3,245,670614,985
Events in quadrant D5,748,569559,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134343
B0229962
C0133792
D0212252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6118220.359595%
B6118214735.093168%
C6118120.196143%
D61182634.298790%

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 7504 6120 2 2 0.03% 0.03%
B 7504 6119 1136 1136 15.14% 18.57%
C 7504 6120 4 4 0.05% 0.07%
D 7504 6120 366 366 4.88% 5.98%

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 15 163804 1032.36 780 767 157.9
A 1 162 25951 159.47 780 767 157.9
A 15 69 12906 76.86 780 767 157.9
B 4 239 4151597 39643.24 556 545 104.7
B 3 209 19496 180.99 556 545 104.7
B 4 142 17249 159.53 556 545 104.7
C 15 208 252335 1408.18 765 774 178.6
C 6 96 11115 57.89 765 774 178.6
C 13 61 5560 26.79 765 774 178.6
D 13 104 1862009 10471.54 741 723 177.7
D 14 34 450432 2530.05 741 723 177.7
D 13 249 290875 1632.39 741 723 177.7

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