ASTROSAT CZTI

Data Quality Report

Orbit 35282

Creation date: 2024-06-27T21:11:30.574643
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/AS1A11_082T01_9000005056_35282cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35282cztM0_level2_quad_clean.evt
Size (bytes)628,816,32091,016,640
Size599.7 MB 86.8 MB
Events in quadrant A2,905,168614,037
Events in quadrant B6,859,437549,382
Events in quadrant C4,420,149597,996
Events in quadrant D4,444,089566,162

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126053
B0245062
C0172742
D0172742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6133160.260884%
B6133151524.702429%
C61331462.380564%
D61333305.380727%

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 8759 6135 1 1 0.01% 0.02%
B 8759 6135 1151 1151 13.14% 18.76%
C 8759 6135 121 121 1.38% 1.97%
D 8759 6135 274 274 3.13% 4.47%

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 10 83 106138 735.21 709 695 143.4
A 15 169 24709 167.44 709 695 143.4
A 13 6 21309 143.73 709 695 143.4
B 5 236 2541506 20746.33 633 616 122.5
B 5 172 1756993 14340.8 633 616 122.5
B 4 232 27744 221.5 633 616 122.5
C 4 254 841868 5328.37 681 687 157.9
C 0 10 602496 3812.09 681 687 157.9
C 15 214 251192 1586.8 681 687 157.9
D 10 118 471217 2827.39 674 656 166.4
D 7 80 425847 2554.78 674 656 166.4
D 2 249 268844 1611.42 674 656 166.4

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