ASTROSAT CZTI

Data Quality Report

Orbit 25277

Creation date: 2024-06-27T19:15:54.140816
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/AS1C05_002T10_9000003698_25277cztM0_level2.evt modeM0/AS1C05_002T10_9000003698_25277cztM0_level2_quad_clean.evt
Size (bytes)442,517,76070,061,760
Size422.0 MB 66.8 MB
Events in quadrant A2,607,422445,047
Events in quadrant B3,033,754447,485
Events in quadrant C2,852,925428,377
Events in quadrant D4,531,464412,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114340
B0126180
C0122100
D0174260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5544230.414863%
B55441091.966089%
C5544881.587302%
D55441142.056277%

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 5844 5545 0 0 0.00% 0.00%
B 5844 5545 42 42 0.72% 0.76%
C 5844 5545 3 3 0.05% 0.05%
D 5844 5545 45 45 0.77% 0.81%

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 6 16 9045 60.88 674 660 137.7
A 13 254 8261 55.19 674 660 137.7
A 3 137 6107 39.55 674 660 137.7
B 3 64 353437 2765.47 666 649 127.6
B 3 112 61225 474.85 666 649 127.6
B 12 111 15843 119.1 666 649 127.6
C 0 239 130071 841.87 647 651 153.7
C 14 238 103024 665.93 647 651 153.7
C 3 233 40327 258.09 647 651 153.7
D 8 195 1759445 11045.45 652 633 159.2
D 1 52 230707 1444.88 652 633 159.2
D 12 235 55108 342.11 652 633 159.2

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