ASTROSAT CZTI

Data Quality Report

Orbit 09228

Creation date: 2024-06-27T15:42:57.196656
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/AS1A02_178T01_9000001286_09228cztM0_level2.evt modeM0/AS1A02_178T01_9000001286_09228cztM0_level2_quad_clean.evt
Size (bytes)580,052,160104,785,920
Size553.2 MB 99.9 MB
Events in quadrant A5,344,771650,114
Events in quadrant B3,973,267664,235
Events in quadrant C3,746,899649,840
Events in quadrant D3,937,197631,363

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01746
B01748
C01744
D01746

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C041
D041

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022039897
B017797680
C017552569
D018213742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82841992.402221%
B83031131.360954%
C8350740.886228%
D83061281.541055%

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 9019 8582 62 62 0.69% 0.72%
B 9019 8602 2 2 0.02% 0.02%
C 9019 8600 0 0 0.00% 0.00%
D 9020 8581 39 39 0.43% 0.45%

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 5 1173392 5876.5 980 960 199.5
A 5 16 180251 898.65 980 960 199.5
A 1 162 94859 470.64 980 960 199.5
B 0 214 49183 255.27 984 960 188.9
B 4 48 32970 169.44 984 960 188.9
B 12 111 20392 102.86 984 960 188.9
C 14 67 7667 30.22 954 955 222.1
C 13 61 7086 27.6 954 955 222.1
C 8 128 6379 24.42 954 955 222.1
D 1 52 114886 449.61 947 924 253.5
D 12 233 52186 202.24 947 924 253.5
D 2 234 45382 175.4 947 924 253.5

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