ASTROSAT CZTI

Data Quality Report

Orbit 28987

Creation date: 2024-06-27T19:58:50.531402
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_073T06_9000004156_28987cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28987cztM0_level2_quad_clean.evt
Size (bytes)1,424,119,680223,557,120
Size1.3 GB 213.2 MB
Events in quadrant A8,396,4811,440,062
Events in quadrant B13,297,1301,388,874
Events in quadrant C8,452,2501,386,872
Events in quadrant D11,776,1141,321,542

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365784
B0510244
C0365734
D0465594

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178933101.732521%
B1789416289.098022%
C178943642.034201%
D178945423.028948%

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 19988 17897 0 0 0.00% 0.00%
B 19989 17898 1169 1169 5.85% 6.53%
C 19989 17898 1 1 0.01% 0.01%
D 19989 17898 341 341 1.71% 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 6 16 63178 141.41 2149 2100 431.9
A 13 254 31539 68.16 2149 2100 431.9
A 3 137 21844 45.71 2149 2100 431.9
B 10 245 4751404 11854.35 2093 2038 400.6
B 4 80 193268 477.31 2093 2038 400.6
B 12 111 50973 122.14 2093 2038 400.6
C 14 238 332195 679.58 2066 2073 485.8
C 2 114 41969 82.13 2066 2073 485.8
C 2 16 20376 37.68 2066 2073 485.8
D 8 195 1433610 2929.9 2060 1999 488.6
D 1 52 921630 1882.09 2060 1999 488.6
D 7 80 629905 1285.06 2060 1999 488.6

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