ASTROSAT CZTI

Data Quality Report

Orbit 30635

Creation date: 2024-06-27T20:17:59.104989
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_055T01_9000004414_30635cztM0_level2.evt modeM0/AS1A10_055T01_9000004414_30635cztM0_level2_quad_clean.evt
Size (bytes)868,901,760109,756,800
Size828.6 MB 104.7 MB
Events in quadrant A4,122,145745,855
Events in quadrant B6,078,709737,400
Events in quadrant C3,825,406707,487
Events in quadrant D11,770,056596,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173142
B0237092
C0162832
D0404014

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76981421.844635%
B76982182.831904%
C76981281.662770%
D7698207826.994024%

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 8053 7700 42 42 0.52% 0.55%
B 8053 7700 16 16 0.20% 0.21%
C 8053 7700 0 0 0.00% 0.00%
D 8173 7701 2094 2094 25.62% 27.19%

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 13 419092 2165.2 954 936 193.1
A 13 254 14980 72.72 954 936 193.1
A 8 192 14357 69.49 954 936 193.1
B 6 159 2180620 12011.77 938 913 181.5
B 6 36 90458 493.46 938 913 181.5
B 0 229 39870 214.68 938 913 181.5
C 14 238 148560 698.06 898 902 211.5
C 3 233 97959 458.84 898 902 211.5
C 15 208 22086 100.15 898 902 211.5
D 8 195 6924897 35337.69 830 808 195.9
D 10 253 1082303 5519.5 830 808 195.9
D 13 249 191873 975.12 830 808 195.9

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