ASTROSAT CZTI

Data Quality Report

Orbit 09490

Creation date: 2024-06-27T15:46:49.180687
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/AS1G05_230T06_9000001350_09490cztM0_level2.evt modeM0/AS1G05_230T06_9000001350_09490cztM0_level2_quad_clean.evt
Size (bytes)436,642,56061,562,880
Size416.4 MB 58.7 MB
Events in quadrant A3,681,266358,884
Events in quadrant B2,961,499367,191
Events in quadrant C2,804,652363,059
Events in quadrant D3,360,985348,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167091808
B0139621287
C0138071288
D0156331677

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013810
B01388
C013820
D013810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143
B0142
C0143
D0141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6028771.277372%
B6125490.800000%
C6124460.751143%
D6063711.171037%

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 7791 6556 8 8 0.10% 0.12%
B 7785 6600 1 1 0.01% 0.02%
C 7791 6632 0 0 0.00% 0.00%
D 7791 6592 30 30 0.39% 0.46%

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 8 5 531740 3593.61 725 709 147.8
A 1 162 152471 1027.01 725 709 147.8
A 1 178 65357 437.49 725 709 147.8
B 0 214 54869 381.02 741 722 142.1
B 12 111 16021 107.66 741 722 142.1
B 11 111 12977 86.24 741 722 142.1
C 9 68 11035 62.38 714 716 165.4
C 4 254 5436 28.54 714 716 165.4
C 13 61 5421 28.44 714 716 165.4
D 1 52 287133 1684.23 699 682 170.1
D 8 195 139239 814.67 699 682 170.1
D 10 172 85626 499.44 699 682 170.1

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