ASTROSAT CZTI

Data Quality Report

Orbit 01169

Creation date: 2024-06-27T14:08:33.773277
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_997T03_9000000216_01169cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01169cztM0_level2_quad_clean.evt
Size (bytes)1,488,499,20086,083,200
Size1.4 GB 82.1 MB
Events in quadrant A8,583,394652,053
Events in quadrant B8,523,377666,742
Events in quadrant C7,826,723653,191
Events in quadrant D19,706,050167,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302663
B0300512
C0280042
D0642222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66592203.303799%
B6659200.300345%
C6659150.225259%
D6659590788.707013%

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 7753 6658 560 560 7.22% 8.41%
B 7753 6658 293 293 3.78% 4.40%
C 7753 6658 150 150 1.93% 2.25%
D 7753 6658 6306 6306 81.34% 94.71%

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 0 175 958048 2008.23 1983 2004 476.1
A 12 243 10799 18.47 1983 2004 476.1
A 13 164 8193 13.0 1983 2004 476.1
B 2 32 291854 583.4 2115 2125 496.6
B 5 191 52268 100.97 2115 2125 496.6
B 5 249 35907 68.02 2115 2125 496.6
C 15 241 326460 614.17 1897 1963 528.4
C 9 83 32515 57.82 1897 1963 528.4
C 3 111 21299 36.6 1897 1963 528.4
D 1 239 17297570 88910.89 629 649 194.5
D 2 16 21509 107.23 629 649 194.5
D 13 25 16116 79.5 629 649 194.5

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