ASTROSAT CZTI

Data Quality Report

Orbit 15366

Creation date: 2024-06-27T17:07:37.532289
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/AS1G08_037T01_9000002264_15366cztM0_level2.evt modeM0/AS1G08_037T01_9000002264_15366cztM0_level2_quad_clean.evt
Size (bytes)505,935,36068,195,520
Size482.5 MB 65.0 MB
Events in quadrant A3,212,844408,752
Events in quadrant B3,372,635415,231
Events in quadrant C3,514,835407,024
Events in quadrant D4,758,932358,429

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139663
B0142152
C0144412
D0189002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6820580.850440%
B6820721.055718%
C6820540.791789%
D68206108.944282%

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 7721 6821 0 0 0.00% 0.00%
B 7721 6821 2 2 0.03% 0.03%
C 7721 6821 0 0 0.00% 0.00%
D 7721 6821 537 537 6.96% 7.87%

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 9 143 15566 87.74 829 811 168.2
A 0 226 7456 39.51 829 811 168.2
A 15 239 6908 36.25 829 811 168.2
B 4 48 26849 162.6 833 813 160.1
B 0 230 25348 153.22 833 813 160.1
B 4 173 25052 151.37 833 813 160.1
C 3 233 387236 2064.95 802 805 187.1
C 13 61 5779 26.58 802 805 187.1
C 5 96 2988 11.67 802 805 187.1
D 1 255 1539983 8041.23 776 754 191.4
D 10 70 91833 475.81 776 754 191.4
D 2 33 86875 449.91 776 754 191.4

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