ASTROSAT CZTI

Data Quality Report

Orbit 00260

Creation date: 2024-06-27T13:58:28.633962
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_122T02_9000000028_00260cztM0_level2.evt modeM0/AS1P01_122T02_9000000028_00260cztM0_level2_quad_clean.evt
Size (bytes)920,767,68067,173,120
Size878.1 MB 64.1 MB
Events in quadrant A6,590,318422,073
Events in quadrant B7,338,121412,270
Events in quadrant C6,287,070414,006
Events in quadrant D7,303,761399,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234812
B0257391
C0226171
D0255921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552330.054318%
B55231993.603114%
C552360.108637%
D5523681.231215%

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 7228 5524 125 125 1.73% 2.26%
B 7228 5524 358 358 4.95% 6.48%
C 7228 5524 93 93 1.29% 1.68%
D 7228 5524 448 448 6.20% 8.11%

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 15 250 19096 47.3 1693 1680 368.2
A 11 242 13813 32.95 1693 1680 368.2
A 0 96 7002 14.45 1693 1680 368.2
B 8 9 527695 1346.72 1678 1691 390.6
B 0 207 127038 320.92 1678 1691 390.6
B 10 14 87320 219.23 1678 1691 390.6
C 3 159 130317 297.48 1563 1624 432.6
C 0 206 7608 13.83 1563 1624 432.6
C 10 19 7261 13.03 1563 1624 432.6
D 10 154 976595 2100.14 1487 1543 464.3
D 1 4 355480 762.34 1487 1543 464.3
D 1 5 113728 241.63 1487 1543 464.3

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