ASTROSAT CZTI

Data Quality Report

Orbit 17844

Creation date: 2024-06-27T17:41:58.572552
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_101T06_9000002656_17844cztM0_level2.evt modeM0/AS1A05_101T06_9000002656_17844cztM0_level2_quad_clean.evt
Size (bytes)416,943,36088,957,440
Size397.6 MB 84.8 MB
Events in quadrant A2,944,264577,945
Events in quadrant B3,171,403587,546
Events in quadrant C2,884,264555,580
Events in quadrant D3,207,494541,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128651
B0135241
C0126671
D0137551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6176260.420984%
B6177400.647564%
C6177450.728509%
D6176741.198187%

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 7351 6177 3 3 0.04% 0.05%
B 7352 6178 2 2 0.03% 0.03%
C 7352 6178 0 0 0.00% 0.00%
D 7351 6177 54 54 0.73% 0.87%

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 15 174 62789 407.5 748 731 152.3
A 0 226 6636 38.77 748 731 152.3
A 12 194 5442 30.93 748 731 152.3
B 0 189 47201 330.11 751 736 140.8
B 15 35 38302 266.89 751 736 140.8
B 0 219 33154 230.31 751 736 140.8
C 14 238 109769 665.13 706 711 164.0
C 3 233 9884 55.94 706 711 164.0
C 8 208 8256 46.02 706 711 164.0
D 7 238 380133 2023.3 707 693 187.5
D 10 70 39287 205.79 707 693 187.5
D 2 234 32394 169.04 707 693 187.5

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