ASTROSAT CZTI

Data Quality Report

Orbit 10542

Creation date: 2024-06-27T16:00:43.845398
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/AS1G07_079T01_9000001528_10542cztM0_level2.evt modeM0/AS1G07_079T01_9000001528_10542cztM0_level2_quad_clean.evt
Size (bytes)575,887,68087,422,400
Size549.2 MB 83.4 MB
Events in quadrant A4,430,351530,912
Events in quadrant B4,651,742551,789
Events in quadrant C3,208,201556,159
Events in quadrant D4,661,469506,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179722
B0187261
C0148531
D0184641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72162924.046563%
B72165918.190133%
C72161482.050998%
D72164536.277716%

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 7271 7217 15 15 0.21% 0.21%
B 7271 7217 304 304 4.18% 4.21%
C 7271 7217 0 0 0.00% 0.00%
D 7271 7217 270 270 3.71% 3.74%

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 1122442 6573.53 830 811 170.6
A 13 251 71451 414.0 830 811 170.6
A 8 5 30082 171.55 830 811 170.6
B 4 239 1259649 7877.09 823 801 159.8
B 11 51 107735 669.13 823 801 159.8
B 0 214 39196 240.25 823 801 159.8
C 14 234 10083 48.82 817 818 189.8
C 13 61 6229 28.51 817 818 189.8
C 8 128 4404 18.89 817 818 189.8
D 1 20 635354 3287.99 797 774 193.0
D 8 195 429390 2220.81 797 774 193.0
D 5 222 270365 1396.85 797 774 193.0

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