ASTROSAT CZTI

Data Quality Report

Orbit 17677

Creation date: 2024-06-27T17:39:24.709934
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/AS1A05_208T01_9000002614_17677cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17677cztM0_level2_quad_clean.evt
Size (bytes)506,856,96094,276,800
Size483.4 MB 89.9 MB
Events in quadrant A3,496,008591,412
Events in quadrant B3,673,319604,792
Events in quadrant C4,271,531577,138
Events in quadrant D3,414,506574,385

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150542
B0154252
C0173222
D0152072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72802122.912088%
B72802283.131868%
C72812573.529735%
D72811852.540860%

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 7475 7282 0 0 0.00% 0.00%
B 7475 7282 4 4 0.05% 0.05%
C 7476 7283 0 0 0.00% 0.00%
D 7476 7283 5 5 0.07% 0.07%

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 14 237 64614 348.97 892 871 182.7
A 0 226 7665 37.19 892 871 182.7
A 3 137 6584 31.28 892 871 182.7
B 10 245 74396 425.69 888 864 172.7
B 7 220 46832 266.12 888 864 172.7
B 0 219 23227 129.46 888 864 172.7
C 3 233 801414 3928.6 855 859 203.8
C 14 238 129649 632.02 855 859 203.8
C 5 218 7311 31.66 855 859 203.8
D 2 234 35960 163.37 877 851 214.9
D 10 70 27374 123.42 877 851 214.9
D 7 38 14324 62.69 877 851 214.9

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