ASTROSAT CZTI

Data Quality Report

Orbit 09851

Creation date: 2024-06-27T15:51:27.185679
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/AS1A03_134T01_9000001400_09851cztM0_level2.evt modeM0/AS1A03_134T01_9000001400_09851cztM0_level2_quad_clean.evt
Size (bytes)429,730,56098,605,440
Size409.8 MB 94.0 MB
Events in quadrant A2,910,397645,326
Events in quadrant B3,116,065649,906
Events in quadrant C2,969,270634,882
Events in quadrant D3,583,652609,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130842
B0136389
C0131995
D01501515

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6401340.531167%
B6397550.859778%
C6399410.640725%
D63961091.704190%

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 7316 6402 0 0 0.00% 0.00%
B 7316 6402 4 4 0.05% 0.06%
C 7316 6402 6 6 0.08% 0.09%
D 7316 6402 66 66 0.90% 1.03%

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 0 226 6765 39.19 754 740 153.8
A 12 194 6018 34.33 754 740 153.8
A 8 4 3991 21.14 754 740 153.8
B 4 81 68352 472.7 755 736 143.0
B 0 214 63167 436.45 755 736 143.0
B 4 239 28569 194.58 755 736 143.0
C 4 254 84694 492.06 737 742 170.6
C 0 207 8481 45.36 737 742 170.6
C 13 61 5526 28.04 737 742 170.6
D 12 233 353146 1910.5 728 711 184.5
D 1 52 220981 1194.06 728 711 184.5
D 2 16 74635 400.73 728 711 184.5

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