ASTROSAT CZTI

Data Quality Report

Orbit 23823

Creation date: 2024-06-27T18:59:06.477871
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_113T01_9000003526_23823cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23823cztM0_level2_quad_clean.evt
Size (bytes)726,258,24064,972,800
Size692.6 MB 62.0 MB
Events in quadrant A3,365,468394,080
Events in quadrant B3,484,811400,231
Events in quadrant C3,479,222389,433
Events in quadrant D11,237,928342,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140941
B0144041
C0143741
D0377861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6317821.298085%
B6318801.266223%
C63181362.152580%
D6318330052.231719%

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 7536 6316 0 0 0.00% 0.00%
B 7537 6317 0 0 0.00% 0.00%
C 7537 6317 2 2 0.03% 0.03%
D 7537 6317 2923 2923 38.78% 46.27%

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 11363 60.28 872 856 174.3
A 0 226 7564 38.49 872 856 174.3
A 3 137 7130 36.0 872 856 174.3
B 15 33 54024 328.17 865 847 162.0
B 3 64 21345 126.5 865 847 162.0
B 12 111 18852 111.12 865 847 162.0
C 14 238 136092 695.7 845 853 194.4
C 7 247 22430 111.0 845 853 194.4
C 0 10 17228 84.24 845 853 194.4
D 13 174 5089992 31560.43 671 653 161.3
D 8 195 2383607 14777.37 671 653 161.3
D 1 52 1195280 7408.22 671 653 161.3

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