ASTROSAT CZTI

Data Quality Report

Orbit 01155

Creation date: 2024-06-27T14:08:21.610980
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/AS1P01_997T03_9000000216_01155cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01155cztM0_level2_quad_clean.evt
Size (bytes)1,006,179,840103,610,880
Size959.6 MB 98.8 MB
Events in quadrant A7,684,421676,057
Events in quadrant B7,985,872691,400
Events in quadrant C7,585,244667,382
Events in quadrant D6,788,789653,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274132
B0283231
C0271611
D0247941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6448871.349256%
B6448480.744417%
C6448630.977047%
D6448761.178660%

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 7568 6448 265 265 3.50% 4.11%
B 7568 6448 243 243 3.21% 3.77%
C 7568 6448 228 228 3.01% 3.54%
D 7568 6448 213 213 2.81% 3.30%

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 14 218 18450 35.23 1997 2016 466.5
A 11 79 7002 10.69 1997 2016 466.5
A 14 203 6636 9.9 1997 2016 466.5
B 15 22 35426 69.38 2071 2086 480.5
B 6 53 32742 63.8 2071 2086 480.5
B 8 4 12684 22.06 2071 2086 480.5
C 15 241 288206 560.45 1851 1913 510.8
C 9 52 25902 46.96 1851 1913 510.8
C 3 111 20782 36.94 1851 1913 510.8
D 13 252 25212 42.65 1807 1877 547.1
D 10 125 8264 11.67 1807 1877 547.1
D 13 73 7706 10.65 1807 1877 547.1

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