ASTROSAT CZTI

Data Quality Report

Orbit 28752

Creation date: 2024-06-27T19:55:49.558369
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_123T08_9000004126_28752cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28752cztM0_level2_quad_clean.evt
Size (bytes)819,328,32096,863,040
Size781.4 MB 92.4 MB
Events in quadrant A3,792,218627,466
Events in quadrant B4,096,575632,917
Events in quadrant C10,110,605543,097
Events in quadrant D6,289,873589,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162342
B0171564
C0355452
D0239382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77611832.357944%
B77612993.852596%
C7761190324.520036%
D77615336.867672%

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 7896 7762 1 1 0.01% 0.01%
B 7896 7762 64 64 0.81% 0.82%
C 7896 7761 761 761 9.64% 9.81%
D 7896 7762 353 353 4.47% 4.55%

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 15 174 36591 184.14 957 935 193.6
A 12 16 21834 107.93 957 935 193.6
A 14 239 18707 91.78 957 935 193.6
B 4 80 302503 1677.51 941 917 179.8
B 0 229 59853 327.82 941 917 179.8
B 12 111 22351 119.22 941 917 179.8
C 3 233 6561123 33369.84 850 853 196.6
C 14 238 160926 814.24 850 853 196.6
C 14 254 37900 188.45 850 853 196.6
D 8 195 1608974 7347.32 913 886 218.9
D 1 52 787561 3594.3 913 886 218.9
D 12 233 207522 944.12 913 886 218.9

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