ASTROSAT CZTI

Data Quality Report

Orbit 19557

Creation date: 2024-06-27T18:04:03.067473
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_115T02_9000002906_19557cztM0_level2.evt modeM0/AS1A05_115T02_9000002906_19557cztM0_level2_quad_clean.evt
Size (bytes)523,563,84098,092,800
Size499.3 MB 93.5 MB
Events in quadrant A3,720,971633,350
Events in quadrant B3,891,684635,555
Events in quadrant C3,865,062597,286
Events in quadrant D3,881,747595,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154203
B0158672
C0157282
D0161232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73131812.475044%
B73142213.021602%
C73142223.035275%
D73141381.886792%

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 9458 7313 0 0 0.00% 0.00%
B 9459 7314 14 14 0.15% 0.19%
C 9459 7314 0 0 0.00% 0.00%
D 9459 7314 6 6 0.06% 0.08%

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 13 254 10984 51.36 964 943 195.5
A 0 226 8367 37.97 964 943 195.5
A 3 137 7652 34.31 964 943 195.5
B 3 64 53984 290.35 951 927 182.7
B 0 198 39503 211.1 951 927 182.7
B 7 220 31102 165.13 951 927 182.7
C 3 233 161097 762.69 905 914 210.0
C 14 238 141527 669.51 905 914 210.0
C 7 247 21279 96.96 905 914 210.0
D 1 52 160174 703.74 929 904 226.3
D 2 16 116568 511.06 929 904 226.3
D 12 225 54248 235.7 929 904 226.3

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