ASTROSAT CZTI

Data Quality Report

Orbit 37025

Creation date: 2024-06-27T21:34:24.367693
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/AS1C07_015T06_9000005264_37025cztM0_level2.evt modeM0/AS1C07_015T06_9000005264_37025cztM0_level2_quad_clean.evt
Size (bytes)1,421,524,800217,722,240
Size1.3 GB 207.6 MB
Events in quadrant A8,720,5881,339,134
Events in quadrant B10,194,9081,342,259
Events in quadrant C9,695,3861,357,764
Events in quadrant D13,199,5941,287,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374693
B0425553
C0399193
D0518563

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18384170.092472%
B183844612.507615%
C183841470.799608%
D183844512.453220%

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 22564 18387 1 1 0.00% 0.01%
B 22564 18387 315 315 1.40% 1.71%
C 22564 18387 130 130 0.58% 0.71%
D 22564 18387 421 421 1.87% 2.29%

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 10 83 597063 1429.22 2078 2033 416.3
A 13 6 46507 106.82 2078 2033 416.3
A 9 143 26374 58.47 2078 2033 416.3
B 5 184 1349618 3491.11 2038 1984 386.0
B 5 172 290694 747.92 2038 1984 386.0
B 5 255 130576 333.12 2038 1984 386.0
C 15 214 769139 1647.0 2021 2036 465.8
C 1 23 478367 1022.7 2021 2036 465.8
C 0 207 259672 553.16 2021 2036 465.8
D 12 235 2576434 5267.69 2023 1967 488.7
D 2 153 1221512 2495.35 2023 1967 488.7
D 2 250 399774 813.96 2023 1967 488.7

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