ASTROSAT CZTI

Data Quality Report

Orbit 20210416_A10_071T02_9000004312_level2

Creation date: 2021-04-17T15:48:14.758922
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_071T02_9000004312cztM0_level2_bc.evt modeM0/AS1A10_071T02_9000004312cztM0_level2_quad_clean.evt
Size (bytes)1,888,761,600502,767,360
Size1.8 GB 479.5 MB
Events in quadrant A8,478,2503,330,235
Events in quadrant B23,722,5233,025,371
Events in quadrant C8,445,5923,168,187
Events in quadrant D13,978,8683,107,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07740
B07740
C07740
D07740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0806710
B01403910
C0822570
D0991370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A377767501.985388%
B37776570815.110123%
C3777612923.420161%
D3777624606.512071%

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 41866 37778 0 0 0.00% 0.00%
B 41866 37777 402 402 0.96% 1.06%
C 41866 37779 3 3 0.01% 0.01%
D 41866 37777 722 722 1.72% 1.91%

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 5 203 141035 303.38 2098 2065 458.1
A 3 1 81256 172.88 2098 2065 458.1
A 8 192 79607 169.28 2098 2065 458.1
B 6 159 9443286 25034.55 1928 1879 377.1
B 6 36 6774225 17957.35 1928 1879 377.1
B 0 183 57459 147.37 1928 1879 377.1
C 3 233 811956 1741.43 1957 1946 465.1
C 2 114 70806 148.04 1957 1946 465.1
C 14 254 31449 63.43 1957 1946 465.1
D 7 80 4881746 10407.42 1981 1930 468.9
D 8 195 1136449 2419.64 1981 1930 468.9
D 2 234 156618 329.91 1981 1930 468.9

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