ASTROSAT CZTI

Data Quality Report

Orbit 25988

Creation date: 2024-06-27T19:23:34.507093
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/AS1A07_068T01_9000003760_25988cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25988cztM0_level2_quad_clean.evt
Size (bytes)551,923,200106,966,080
Size526.4 MB 102.0 MB
Events in quadrant A3,651,679702,052
Events in quadrant B3,730,520695,145
Events in quadrant C3,736,247663,184
Events in quadrant D5,071,887641,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159330
B0161320
C0161110
D0201830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77181071.386370%
B77061311.699974%
C77351351.745314%
D77125076.574170%

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 8469 7795 0 0 0.00% 0.00%
B 8470 7792 1 1 0.01% 0.01%
C 8470 7798 0 0 0.00% 0.00%
D 8469 7793 403 403 4.76% 5.17%

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 13 254 12090 58.19 947 925 191.9
A 3 137 8945 41.8 947 925 191.9
A 0 226 8063 37.2 947 925 191.9
B 15 33 32951 178.11 933 908 179.9
B 12 111 22275 118.77 933 908 179.9
B 11 111 19782 104.91 933 908 179.9
C 14 238 144505 687.42 893 896 208.9
C 3 233 63393 299.16 893 896 208.9
C 0 207 51257 241.06 893 896 208.9
D 1 52 1637457 7771.01 881 859 210.6
D 12 233 51779 241.78 881 859 210.6
D 2 234 30934 142.8 881 859 210.6

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