ASTROSAT CZTI

Data Quality Report

Orbit 00971

Creation date: 2024-06-27T14:05:30.599268
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_998T01_9000000188_00971cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00971cztM0_level2_quad_clean.evt
Size (bytes)960,433,92094,602,240
Size915.9 MB 90.2 MB
Events in quadrant A6,983,235624,093
Events in quadrant B7,641,389617,956
Events in quadrant C7,225,102604,670
Events in quadrant D6,838,583598,859

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250340
B0269450
C0256870
D0245850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599830.050017%
B5998190.316772%
C5999230.383397%
D5999150.250042%

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 7123 5999 176 176 2.47% 2.93%
B 7123 5999 285 285 4.00% 4.75%
C 7124 6000 172 172 2.41% 2.87%
D 7124 6000 188 188 2.64% 3.13%

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 12 189 8924 16.35 1813 1822 434.5
A 11 242 7086 12.12 1813 1822 434.5
A 11 79 6850 11.57 1813 1822 434.5
B 0 220 115537 255.61 1897 1900 444.6
B 7 221 104283 230.29 1897 1900 444.6
B 8 234 97510 215.06 1897 1900 444.6
C 15 241 257752 527.45 1754 1816 485.2
C 9 52 36871 72.24 1754 1816 485.2
C 3 79 31204 60.57 1754 1816 485.2
D 1 4 384322 736.98 1704 1761 519.1
D 13 73 32728 59.66 1704 1761 519.1
D 2 63 15482 26.43 1704 1761 519.1

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