ASTROSAT CZTI

Data Quality Report

Orbit 07596

Creation date: 2024-06-27T15:21:35.760053
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/AS1G06_117T01_9000001046_07596cztM0_level2.evt modeM0/AS1G06_117T01_9000001046_07596cztM0_level2_quad_clean.evt
Size (bytes)750,072,96072,901,440
Size715.3 MB 69.5 MB
Events in quadrant A4,506,155462,839
Events in quadrant B3,058,979476,818
Events in quadrant C11,284,815368,503
Events in quadrant D3,431,582449,617

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176112
B0131231
C0379761
D0145741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64351822.828283%
B6435140.217560%
C6435273642.517483%
D6435681.056721%

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 7655 6436 137 137 1.79% 2.13%
B 7655 6436 0 0 0.00% 0.00%
C 7655 6435 2290 2290 29.92% 35.59%
D 7655 6436 49 49 0.64% 0.76%

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 15 239 1509365 9580.97 778 765 157.5
A 0 226 7564 43.18 778 765 157.5
A 12 194 6755 38.04 778 765 157.5
B 12 111 15769 100.25 784 766 149.7
B 11 111 12716 79.85 784 766 149.7
B 0 214 12689 79.67 784 766 149.7
C 9 68 8393918 55701.91 658 661 150.7
C 8 229 290619 1924.31 658 661 150.7
C 1 16 24485 158.11 658 661 150.7
D 2 152 338715 1845.83 754 730 183.1
D 5 233 118808 644.86 754 730 183.1
D 2 14 73327 396.47 754 730 183.1

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