ASTROSAT CZTI

Data Quality Report

Orbit 28728

Creation date: 2024-06-27T19:55:30.309851
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_123T07_9000004124_28728cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28728cztM0_level2_quad_clean.evt
Size (bytes)460,900,80092,419,200
Size439.5 MB 88.1 MB
Events in quadrant A2,994,534592,124
Events in quadrant B3,109,231613,397
Events in quadrant C3,045,321583,834
Events in quadrant D4,369,437558,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013436256
B013637179
C013494225
D017758329

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01342
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458310.480025%
B6487370.570372%
C6465741.144625%
D64571983.066440%

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 7633 6541 2 2 0.03% 0.03%
B 7632 6559 1 1 0.01% 0.02%
C 7633 6540 0 0 0.00% 0.00%
D 7631 6536 176 176 2.31% 2.69%

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 12426 75.23 771 754 155.2
A 14 239 8702 51.22 771 754 155.2
A 3 137 7648 44.43 771 754 155.2
B 4 80 57688 382.68 774 753 148.8
B 12 111 18276 117.78 774 753 148.8
B 11 111 16259 104.22 774 753 148.8
C 14 238 128466 731.88 742 747 174.5
C 14 254 13292 71.89 742 747 174.5
C 3 233 12615 68.01 742 747 174.5
D 8 195 799973 4574.02 730 710 174.7
D 1 52 676871 3869.53 730 710 174.7
D 12 233 94123 534.58 730 710 174.7

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