ASTROSAT CZTI

Data Quality Report

Orbit 04098

Creation date: 2024-06-27T14:37:20.377616
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_192T01_9000000522_04098cztM0_level2.evt modeM0/AS1G05_192T01_9000000522_04098cztM0_level2_quad_clean.evt
Size (bytes)491,495,04069,816,960
Size468.7 MB 66.6 MB
Events in quadrant A3,104,103428,894
Events in quadrant B5,746,447408,287
Events in quadrant C2,762,154433,501
Events in quadrant D2,857,606416,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133632
B0214792
C0126342
D0131172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6111741.210931%
B61115939.703813%
C6111200.327279%
D6111470.769105%

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 7136 6112 23 23 0.32% 0.38%
B 7136 6111 420 420 5.89% 6.87%
C 7136 6112 1 1 0.01% 0.02%
D 7136 6112 34 34 0.48% 0.56%

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 0 199 278336 1923.92 706 692 144.3
A 0 50 36892 250.85 706 692 144.3
A 13 14 33330 226.16 706 692 144.3
B 3 0 2849121 21129.5 703 688 134.8
B 10 16 110314 813.2 703 688 134.8
B 15 204 15308 108.45 703 688 134.8
C 10 65 23053 137.29 696 700 162.8
C 14 67 11324 65.25 696 700 162.8
C 9 144 6006 32.59 696 700 162.8
D 13 239 76543 455.21 688 669 166.7
D 12 233 60932 361.55 688 669 166.7
D 13 223 35034 206.18 688 669 166.7

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