ASTROSAT CZTI

Data Quality Report

Orbit 11896

Creation date: 2024-06-27T16:19:40.287087
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/AS1A04_130T01_9000001762_11896cztM0_level2.evt modeM0/AS1A04_130T01_9000001762_11896cztM0_level2_quad_clean.evt
Size (bytes)493,848,00089,752,320
Size471.0 MB 85.6 MB
Events in quadrant A3,687,779577,319
Events in quadrant B4,225,048567,841
Events in quadrant C2,961,669577,440
Events in quadrant D3,654,218555,569

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152723
B0166792
C0129612
D0149142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301620.983971%
B63012694.269164%
C6301170.269798%
D6301410.650690%

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 7567 6303 5 5 0.07% 0.08%
B 7567 6303 147 147 1.94% 2.33%
C 7567 6303 0 0 0.00% 0.00%
D 7567 6303 19 19 0.25% 0.30%

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 14 63 384795 2455.49 780 763 156.4
A 1 162 100948 640.58 780 763 156.4
A 1 178 54368 342.75 780 763 156.4
B 4 239 722912 4969.1 773 755 145.3
B 0 231 176230 1207.43 773 755 145.3
B 10 244 100873 688.9 773 755 145.3
C 13 61 5576 27.37 759 763 175.8
C 14 234 2140 7.83 759 763 175.8
C 3 202 1827 6.05 759 763 175.8
D 8 195 457945 2307.55 753 740 198.1
D 12 233 102061 511.37 753 740 198.1
D 13 249 62418 311.29 753 740 198.1

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