ASTROSAT CZTI

Data Quality Report

Orbit 21812

Creation date: 2024-06-27T18:32:32.153084
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/AS1A07_004T01_9000003230_21812cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21812cztM0_level2_quad_clean.evt
Size (bytes)481,861,44094,242,240
Size459.5 MB 89.9 MB
Events in quadrant A3,982,108593,933
Events in quadrant B3,504,072642,092
Events in quadrant C3,131,071612,489
Events in quadrant D3,553,791571,277

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157372
B0142342
C0131002
D0147332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62214397.056743%
B6221841.350265%
C6221490.787655%
D62211021.639608%

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 7521 6223 299 299 3.98% 4.80%
B 7521 6223 21 21 0.28% 0.34%
C 7521 6223 0 0 0.00% 0.00%
D 7521 6223 69 69 0.92% 1.11%

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 942771 5957.46 786 773 158.1
A 13 254 12125 71.79 786 773 158.1
A 0 226 6993 39.34 786 773 158.1
B 3 64 116791 758.71 817 801 152.9
B 15 33 51734 333.16 817 801 152.9
B 0 230 46437 298.51 817 801 152.9
C 14 238 122891 681.93 770 778 179.1
C 13 61 5542 26.6 770 778 179.1
C 0 10 4777 22.33 770 778 179.1
D 1 52 307225 1642.53 764 742 186.6
D 13 104 108860 579.43 764 742 186.6
D 5 32 88167 468.53 764 742 186.6

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