ASTROSAT CZTI

Data Quality Report

Orbit 25840

Creation date: 2024-06-27T19:21:58.744155
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_9000003756_25840cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25840cztM0_level2_quad_clean.evt
Size (bytes)523,264,32093,096,000
Size499.0 MB 88.8 MB
Events in quadrant A4,662,506595,860
Events in quadrant B3,252,259618,483
Events in quadrant C3,231,050580,647
Events in quadrant D4,247,988558,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181050
B0138530
C0138300
D0171750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66853355.011219%
B6685340.508601%
C6685530.792820%
D66853204.786836%

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 7645 6686 339 339 4.43% 5.07%
B 7645 6686 1 1 0.01% 0.01%
C 7645 6686 0 0 0.00% 0.00%
D 7645 6686 360 360 4.71% 5.38%

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 0 13 1518830 9294.59 812 796 163.3
A 13 254 10130 57.15 812 796 163.3
A 6 16 9851 55.44 812 796 163.3
B 12 111 19118 115.53 824 803 158.5
B 11 111 17301 104.07 824 803 158.5
B 14 111 15649 93.65 824 803 158.5
C 14 238 126323 680.59 782 787 184.5
C 3 233 51830 276.73 782 787 184.5
C 13 61 5371 24.85 782 787 184.5
D 1 3 1032389 5527.57 777 759 186.6
D 1 52 178817 954.05 777 759 186.6
D 7 80 47267 249.19 777 759 186.6

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