ASTROSAT CZTI

Data Quality Report

Orbit 20665

Creation date: 2024-06-27T18:18:07.330707
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/AS1A05_229T02_9000003060_20665cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20665cztM0_level2_quad_clean.evt
Size (bytes)467,536,32072,866,880
Size445.9 MB 69.5 MB
Events in quadrant A3,502,217441,452
Events in quadrant B3,544,591441,887
Events in quadrant C3,358,061433,071
Events in quadrant D3,300,085423,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146191
B0146911
C0141682
D0140801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66991552.313778%
B67001101.641791%
C66991171.746529%
D6699660.985222%

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 8684 6701 63 63 0.73% 0.94%
B 8685 6702 17 17 0.20% 0.25%
C 8684 6701 0 0 0.00% 0.00%
D 8684 6701 6 6 0.07% 0.09%

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 5 16 215987 1267.8 846 828 169.7
A 13 252 31474 180.58 846 828 169.7
A 0 226 7295 38.1 846 828 169.7
B 7 220 172000 1073.89 849 829 159.4
B 12 111 18986 113.91 849 829 159.4
B 11 111 16851 100.52 849 829 159.4
C 14 238 129705 670.89 820 824 192.1
C 8 208 24812 124.87 820 824 192.1
C 3 233 6303 28.52 820 824 192.1
D 1 52 49477 243.7 828 806 199.7
D 7 238 36031 176.37 828 806 199.7
D 2 234 29694 144.64 828 806 199.7

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