ASTROSAT CZTI

Data Quality Report

Orbit 15757

Creation date: 2024-06-27T17:13:05.522722
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/AS1T02_088T01_9000002332_15757cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15757cztM0_level2_quad_clean.evt
Size (bytes)435,113,28085,475,520
Size415.0 MB 81.5 MB
Events in quadrant A3,078,926542,558
Events in quadrant B3,372,154548,249
Events in quadrant C3,175,448527,199
Events in quadrant D3,110,105518,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134592
B0140731
C0135731
D0135721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6481400.617189%
B6481540.833205%
C6481540.833205%
D6481180.277735%

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 7417 6483 7 7 0.09% 0.11%
B 7417 6483 7 7 0.09% 0.11%
C 7417 6483 0 0 0.00% 0.00%
D 7417 6483 6 6 0.08% 0.09%

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 9 143 69819 436.03 781 765 158.4
A 0 226 7000 39.37 781 765 158.4
A 12 194 5752 31.49 781 765 158.4
B 4 251 76818 506.0 778 759 150.3
B 4 216 50722 332.39 778 759 150.3
B 5 236 50051 327.93 778 759 150.3
C 3 233 135386 769.11 742 748 175.1
C 14 238 112800 640.09 742 748 175.1
C 7 247 18515 101.49 742 748 175.1
D 1 52 210196 1036.31 746 729 202.1
D 2 234 26583 127.91 746 729 202.1
D 2 120 24175 116.0 746 729 202.1

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