ASTROSAT CZTI

Data Quality Report

Orbit 36541

Creation date: 2024-06-27T21:28:10.182012
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/AS1A11_089T02_9000005216_36541cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36541cztM0_level2_quad_clean.evt
Size (bytes)499,440,96072,872,640
Size476.3 MB 69.5 MB
Events in quadrant A3,364,149462,824
Events in quadrant B3,735,823448,381
Events in quadrant C3,497,373445,677
Events in quadrant D4,125,386434,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138283
B0148362
C0140182
D0162162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5935861.449031%
B59352414.060657%
C59351542.594777%
D59351642.763269%

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 7247 5936 52 52 0.72% 0.88%
B 7247 5936 101 101 1.39% 1.70%
C 7247 5936 119 119 1.64% 2.00%
D 7247 5936 146 146 2.01% 2.46%

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 15 223 517152 3800.19 675 664 135.9
A 10 83 217439 1594.98 675 664 135.9
A 13 254 9170 62.59 675 664 135.9
B 0 219 497982 3887.77 662 645 127.9
B 5 255 218987 1706.82 662 645 127.9
B 0 189 103450 803.64 662 645 127.9
C 0 10 484696 3173.03 646 650 152.6
C 15 214 253043 1654.49 646 650 152.6
C 14 254 158356 1033.8 646 650 152.6
D 12 235 749964 4742.65 649 632 158.0
D 13 249 235990 1489.62 649 632 158.0
D 2 137 133075 838.25 649 632 158.0

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