ASTROSAT CZTI

Data Quality Report

Orbit 18545

Creation date: 2024-06-27T17:51:14.722242
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/AS1A05_082T12_9000002754_18545cztM0_level2.evt modeM0/AS1A05_082T12_9000002754_18545cztM0_level2_quad_clean.evt
Size (bytes)285,840,00051,252,480
Size272.6 MB 48.9 MB
Events in quadrant A3,196,448305,129
Events in quadrant B1,399,277362,897
Events in quadrant C1,281,934353,615
Events in quadrant D2,585,175327,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114451
B061731
C058171
D096881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A283162922.218297%
B2831561.978100%
C2831240.847757%
D28312839.996468%

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 2831 2831 530 530 18.72% 18.72%
B 2831 2831 35 35 1.24% 1.24%
C 2831 2831 2 2 0.07% 0.07%
D 2831 2831 261 261 9.22% 9.22%

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 2095185 35092.17 285 279 59.7
A 13 254 4013 62.55 285 279 59.7
A 4 2 2857 43.18 285 279 59.7
B 4 80 76754 1211.93 322 314 63.1
B 3 64 54464 858.53 322 314 63.1
B 12 111 7476 113.55 322 314 63.1
C 14 238 49265 660.23 313 316 74.1
C 9 54 11415 149.7 313 316 74.1
C 13 61 2202 25.44 313 316 74.1
D 7 238 922580 12399.68 301 292 74.4
D 13 153 253185 3400.01 301 292 74.4
D 1 52 226212 3037.38 301 292 74.4

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