ASTROSAT CZTI

Data Quality Report

Orbit 26802

Creation date: 2024-06-27T19:33:07.578903
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/AS1A09_079T01_9000003864_26802cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26802cztM0_level2_quad_clean.evt
Size (bytes)507,916,800117,596,160
Size484.4 MB 112.1 MB
Events in quadrant A3,410,702779,146
Events in quadrant B3,405,169799,759
Events in quadrant C3,535,738770,077
Events in quadrant D4,580,666750,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145500
B0143520
C0146710
D0180210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629520.784432%
B6629801.206819%
C66281281.931201%
D66282443.681352%

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 7604 6630 1 1 0.01% 0.02%
B 7604 6629 15 15 0.20% 0.23%
C 7603 6629 36 36 0.47% 0.54%
D 7603 6629 200 200 2.63% 3.02%

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 13 330166 2038.95 798 782 161.5
A 13 254 10450 59.85 798 782 161.5
A 3 137 7586 42.12 798 782 161.5
B 0 229 101725 663.57 800 779 152.1
B 0 189 64764 420.61 800 779 152.1
B 10 246 51381 332.63 800 779 152.1
C 15 208 354438 1944.17 774 778 181.9
C 14 238 123908 676.88 774 778 181.9
C 14 176 24650 131.23 774 778 181.9
D 7 80 1320812 7179.49 772 754 183.9
D 2 250 181985 985.67 772 754 183.9
D 1 52 95306 514.25 772 754 183.9

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