ASTROSAT CZTI

Data Quality Report

Orbit 25300

Creation date: 2024-06-27T19:16:05.051767
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/AS1A09_022T01_9000003702_25300cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25300cztM0_level2_quad_clean.evt
Size (bytes)2,898,181,440468,685,440
Size2.7 GB 447.0 MB
Events in quadrant A19,636,5803,046,982
Events in quadrant B20,957,5903,078,316
Events in quadrant C16,264,2443,005,128
Events in quadrant D28,648,8482,753,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0804270
B0843340
C0700150
D01079730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3361313504.016303%
B3361415134.501101%
C336143601.070982%
D33614365510.873446%

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 44706 33620 779 779 1.74% 2.32%
B 44707 33621 885 885 1.98% 2.63%
C 44707 33621 32 32 0.07% 0.10%
D 44707 33619 2834 2834 6.34% 8.43%

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 3985646 4946.44 4052 3965 805.0
A 13 254 54036 62.2 4052 3965 805.0
A 3 137 36065 39.88 4052 3965 805.0
B 3 112 3342828 4466.61 4013 3911 747.5
B 3 64 1508955 2013.36 4013 3911 747.5
B 0 190 302394 399.29 4013 3911 747.5
C 14 238 628913 691.32 3917 3945 904.0
C 0 239 197381 213.97 3917 3945 904.0
C 3 233 86789 91.64 3917 3945 904.0
D 12 235 7514093 8255.43 3802 3694 909.8
D 1 52 2682724 2944.79 3802 3694 909.8
D 7 38 1257202 1377.86 3802 3694 909.8

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