ASTROSAT CZTI

Data Quality Report

Orbit 25639

Creation date: 2024-06-27T19:19:50.920434
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_013T02_9000003734_25639cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25639cztM0_level2_quad_clean.evt
Size (bytes)553,982,40094,078,080
Size528.3 MB 89.7 MB
Events in quadrant A3,815,947586,807
Events in quadrant B3,705,580596,275
Events in quadrant C3,651,061567,406
Events in quadrant D5,075,323555,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160920
B0160850
C0159920
D0203200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77971872.398358%
B77982292.936650%
C77982082.667351%
D77983494.475507%

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 7997 7798 0 0 0.00% 0.00%
B 7998 7799 2 2 0.03% 0.03%
C 7998 7799 0 0 0.00% 0.00%
D 7998 7799 209 209 2.61% 2.68%

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 8 192 202121 1067.32 937 916 188.5
A 13 254 11412 55.68 937 916 188.5
A 3 137 9028 43.03 937 916 188.5
B 3 112 23278 124.89 933 908 179.1
B 12 111 22530 120.71 933 908 179.1
B 11 111 20215 107.79 933 908 179.1
C 14 238 146102 696.48 896 898 208.5
C 3 233 11740 52.0 896 898 208.5
C 5 251 6396 26.37 896 898 208.5
D 8 195 873166 3784.42 894 869 230.5
D 1 52 779024 3375.99 894 869 230.5
D 2 234 29045 122.24 894 869 230.5

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