ASTROSAT CZTI

Data Quality Report

Orbit 24022

Creation date: 2024-06-27T19:01:14.236177
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_165T01_9000003558_24022cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24022cztM0_level2_quad_clean.evt
Size (bytes)1,264,786,560333,541,440
Size1.2 GB 318.1 MB
Events in quadrant A8,298,8162,259,878
Events in quadrant B8,589,7442,298,028
Events in quadrant C8,426,8302,197,180
Events in quadrant D11,783,3112,119,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364804
B0370184
C0364574
D0468764

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178341030.577549%
B178341280.717730%
C178352061.155032%
D178357083.969722%

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 19884 17837 5 5 0.03% 0.03%
B 19884 17837 10 10 0.05% 0.06%
C 19885 17838 7 7 0.04% 0.04%
D 19885 17837 454 454 2.28% 2.55%

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 6 16 151619 354.18 2108 2061 422.3
A 13 254 28019 61.47 2108 2061 422.3
A 3 137 18604 39.18 2108 2061 422.3
B 0 189 183882 460.14 2104 2048 395.2
B 12 111 47832 115.86 2104 2048 395.2
B 11 111 42191 101.58 2104 2048 395.2
C 14 238 323232 684.63 2026 2043 469.1
C 0 239 166622 350.81 2026 2043 469.1
C 7 247 16446 30.7 2026 2043 469.1
D 8 195 2006097 4117.47 2024 1966 486.7
D 12 218 1276903 2619.35 2024 1966 486.7
D 1 52 315748 644.66 2024 1966 486.7

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