ASTROSAT CZTI

Data Quality Report

Orbit 34480

Creation date: 2022-02-12T20:20:17.875496
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/AS1A10_071T14_9000004924_34480cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34480cztM0_level2_quad_clean.evt
Size (bytes)481,366,08062,023,680
Size459.1 MB 59.2 MB
Events in quadrant A3,062,638385,067
Events in quadrant B4,062,970387,105
Events in quadrant C3,015,955386,706
Events in quadrant D4,094,704365,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124623
B0152492
C0121112
D0159292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5049310.613983%
B504956511.190335%
C5049470.930877%
D50492094.139434%

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 7172 5050 7 7 0.10% 0.14%
B 7172 5050 406 406 5.66% 8.04%
C 7172 5050 23 23 0.32% 0.46%
D 7172 5050 173 173 2.41% 3.43%

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 15 169 358665 2642.56 682 672 135.5
A 10 83 38942 282.49 682 672 135.5
A 9 143 12153 84.75 682 672 135.5
B 5 172 1413500 11788.0 643 629 119.9
B 0 189 43693 359.3 643 629 119.9
B 0 229 31109 254.3 643 629 119.9
C 15 214 217755 1415.81 669 678 153.3
C 0 10 136184 883.79 669 678 153.3
C 15 208 22058 139.44 669 678 153.3
D 8 195 576652 3631.23 657 642 158.6
D 7 223 415509 2615.36 657 642 158.6
D 12 79 168474 1058.03 657 642 158.6

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