ASTROSAT CZTI

Data Quality Report

Orbit 31952

Creation date: 2024-06-27T20:34:30.432435
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_002T04_9000004660_31952cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31952cztM0_level2_quad_clean.evt
Size (bytes)762,275,520114,073,920
Size727.0 MB 108.8 MB
Events in quadrant A3,371,790788,770
Events in quadrant B7,866,222738,238
Events in quadrant C4,426,000732,031
Events in quadrant D6,931,145689,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148691
B0285231
C0181321
D0254621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7260310.426997%
B726098413.553719%
C72603164.352617%
D726098513.567493%

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 7595 7261 1 1 0.01% 0.01%
B 7595 7260 606 606 7.98% 8.35%
C 7595 7260 19 19 0.25% 0.26%
D 7595 7260 822 822 10.82% 11.32%

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 13 6 16188 88.62 864 844 173.1
A 13 254 14980 81.64 864 844 173.1
A 0 78 9736 51.36 864 844 173.1
B 6 159 2117747 13651.17 813 790 155.1
B 4 80 2052895 13232.97 813 790 155.1
B 5 172 216279 1389.58 813 790 155.1
C 3 233 845543 4432.78 818 822 190.6
C 14 238 154382 805.83 818 822 190.6
C 0 10 153819 802.87 818 822 190.6
D 8 195 1457559 7591.79 801 779 191.9
D 12 33 952778 4961.2 801 779 191.9
D 12 233 753997 3925.28 801 779 191.9

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