ASTROSAT CZTI

Data Quality Report

Orbit 31926

Creation date: 2024-06-27T20:34:15.704445
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/AS1A10_123T09_9000004654_31926cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31926cztM0_level2_quad_clean.evt
Size (bytes)594,613,44065,335,680
Size567.1 MB 62.3 MB
Events in quadrant A2,521,429426,859
Events in quadrant B4,465,470412,687
Events in quadrant C6,012,780381,448
Events in quadrant D4,629,499364,828

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126761310
B0204802898
C0248493028
D0205373156

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012814
B012713
C013014
D012612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051
B062
C052
D051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A563690.159688%
B55891132.021829%
C558370212.573885%
D55685279.464799%

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 15637 5678 0 0 0.00% 0.00%
B 15622 5632 51 51 0.33% 0.91%
C 15621 5635 284 284 1.82% 5.04%
D 15629 5612 498 498 3.19% 8.87%

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 13 254 11006 79.49 647 633 130.5
A 13 6 10947 79.04 647 633 130.5
A 3 137 6682 46.36 647 633 130.5
B 6 159 1560180 12856.35 633 617 121.3
B 4 80 212818 1749.29 633 617 121.3
B 10 245 142650 1170.86 633 617 121.3
C 3 233 3225315 23154.29 590 595 139.3
C 0 10 351448 2519.21 590 595 139.3
C 14 238 94418 673.67 590 595 139.3
D 12 33 1266767 8797.05 597 580 143.9
D 12 218 374860 2600.38 597 580 143.9
D 8 195 347107 2407.56 597 580 143.9

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