ASTROSAT CZTI

Data Quality Report

Orbit 25254

Creation date: 2024-06-27T19:15:34.336102
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/AS1A09_027T01_9000003694_25254cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25254cztM0_level2_quad_clean.evt
Size (bytes)734,869,44099,699,840
Size700.8 MB 95.1 MB
Events in quadrant A2,864,120771,342
Events in quadrant B3,050,812772,510
Events in quadrant C3,099,425728,197
Events in quadrant D12,845,855337,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121890
B0127340
C0126920
D0422050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5827641.098335%
B5828941.612903%
C58281061.818806%
D5827468180.332933%

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 6882 5828 0 0 0.00% 0.00%
B 6883 5829 10 10 0.15% 0.17%
C 6883 5829 2 2 0.03% 0.03%
D 6882 5828 3791 3791 55.09% 65.05%

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 3 1 29251 195.49 729 715 146.0
A 4 2 15827 103.53 729 715 146.0
A 13 254 10875 69.6 729 715 146.0
B 15 33 49723 361.27 717 699 135.7
B 10 251 49326 358.35 717 699 135.7
B 0 229 40665 294.52 717 699 135.7
C 0 239 141450 882.98 686 688 159.4
C 14 238 112802 703.27 686 688 159.4
C 2 16 82164 511.09 686 688 159.4
D 1 239 8804806 95610.29 380 369 92.1
D 9 35 1672936 18162.96 380 369 92.1
D 8 195 715795 7769.05 380 369 92.1

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