ASTROSAT CZTI

Data Quality Report

Orbit 15479

Creation date: 2024-06-27T17:09:10.353604
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/AS1T02_082T01_9000002286_15479cztM0_level2.evt modeM0/AS1T02_082T01_9000002286_15479cztM0_level2_quad_clean.evt
Size (bytes)574,217,280114,364,800
Size547.6 MB 109.1 MB
Events in quadrant A3,884,820747,563
Events in quadrant B5,293,383728,541
Events in quadrant C3,729,239729,760
Events in quadrant D3,953,392715,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169343
B0209302
C0160952
D0172062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7810791.011524%
B78105647.221511%
C7810951.216389%
D7810881.126761%

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 8556 7814 16 16 0.19% 0.20%
B 8556 7814 316 316 3.69% 4.04%
C 8556 7814 0 0 0.00% 0.00%
D 8556 7814 32 32 0.37% 0.41%

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 179991 957.93 923 903 187.0
A 14 237 96462 511.14 923 903 187.0
A 9 143 37106 193.65 923 903 187.0
B 10 245 1474745 8539.72 903 880 172.6
B 0 197 72189 413.17 903 880 172.6
B 3 209 52618 299.78 903 880 172.6
C 3 233 163962 793.55 878 883 205.5
C 14 238 134556 650.46 878 883 205.5
C 13 61 6499 27.33 878 883 205.5
D 1 52 254347 1161.66 890 862 218.2
D 5 222 89248 405.05 890 862 218.2
D 7 38 69301 313.64 890 862 218.2

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