ASTROSAT CZTI

Data Quality Report

Orbit 13557

Creation date: 2024-06-27T16:42:37.417874
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/AS1A04_180T01_9000002000_13557cztM0_level2.evt modeM0/AS1A04_180T01_9000002000_13557cztM0_level2_quad_clean.evt
Size (bytes)170,714,88031,959,360
Size162.8 MB 30.5 MB
Events in quadrant A1,135,480206,291
Events in quadrant B1,152,137208,455
Events in quadrant C1,165,027206,385
Events in quadrant D1,565,261186,749

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046782
B047671
C047661
D060831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2207160.724966%
B2207271.223380%
C220790.407793%
D22071295.845039%

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 3183 2209 0 0 0.00% 0.00%
B 3183 2208 0 0 0.00% 0.00%
C 3183 2209 0 0 0.00% 0.00%
D 3183 2209 72 72 2.26% 3.26%

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 14 238 12565 203.18 287 281 60.5
A 9 143 9327 149.62 287 281 60.5
A 1 162 7048 111.93 287 281 60.5
B 3 209 11174 189.5 289 282 57.5
B 12 111 6333 105.27 289 282 57.5
B 11 111 5155 84.78 289 282 57.5
C 3 233 71594 1058.86 280 282 67.3
C 13 61 1982 25.24 280 282 67.3
C 8 222 1043 11.3 280 282 67.3
D 13 122 246198 3636.67 269 261 67.6
D 5 222 212116 3132.7 269 261 67.6
D 8 195 32808 481.27 269 261 67.6

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