ASTROSAT CZTI

Data Quality Report

Orbit 27334

Creation date: 2024-06-27T19:39:00.494828
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/AS1T03_255T01_9000003922_27334cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27334cztM0_level2_quad_clean.evt
Size (bytes)629,628,480100,854,720
Size600.5 MB 96.2 MB
Events in quadrant A3,896,135661,792
Events in quadrant B5,884,674618,760
Events in quadrant C3,836,926626,844
Events in quadrant D4,932,315614,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165670
B0223950
C0162650
D0197520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7642680.889819%
B764378410.257752%
C76431161.517729%
D76433053.990580%

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 8287 7644 20 20 0.24% 0.26%
B 8288 7645 491 491 5.92% 6.42%
C 8288 7645 35 35 0.42% 0.46%
D 8287 7644 271 271 3.27% 3.55%

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 245387 1291.7 938 919 189.3
A 8 192 15554 77.33 938 919 189.3
A 13 254 13362 65.75 938 919 189.3
B 3 64 1788323 10341.67 897 874 172.8
B 5 172 412200 2379.82 897 874 172.8
B 7 205 122529 703.86 897 874 172.8
C 15 208 170630 802.8 892 895 211.4
C 14 238 140812 661.77 892 895 211.4
C 2 16 42812 198.26 892 895 211.4
D 1 52 684405 2935.39 882 863 232.9
D 2 250 396265 1698.01 882 863 232.9
D 12 233 247211 1057.91 882 863 232.9

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