ASTROSAT CZTI

Data Quality Report

Orbit 23401

Creation date: 2024-06-27T18:53:53.107286
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_127T02_9000003460_23401cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23401cztM0_level2_quad_clean.evt
Size (bytes)449,847,36074,324,160
Size429.0 MB 70.9 MB
Events in quadrant A3,361,765461,395
Events in quadrant B3,195,911470,655
Events in quadrant C3,093,866446,535
Events in quadrant D3,553,389441,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137861
B0132851
C0130711
D0146011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163460.746390%
B6164540.876055%
C6164821.330305%
D61641041.687216%

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 7278 6163 0 0 0.00% 0.00%
B 7279 6164 3 3 0.04% 0.05%
C 7279 6164 1 1 0.01% 0.02%
D 7279 6164 82 82 1.13% 1.33%

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 319181 2020.93 790 775 157.6
A 13 254 9560 55.76 790 775 157.6
A 3 137 6848 38.55 790 775 157.6
B 0 189 52784 349.29 786 766 148.9
B 0 190 39385 259.32 786 766 148.9
B 12 111 18128 116.58 786 766 148.9
C 14 238 119957 682.61 750 756 174.6
C 2 16 37382 209.74 750 756 174.6
C 10 22 5847 29.15 750 756 174.6
D 1 52 644348 3478.32 759 735 185.0
D 7 238 24417 127.98 759 735 185.0
D 2 234 22701 118.71 759 735 185.0

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