ASTROSAT CZTI

Data Quality Report

Orbit 20727

Creation date: 2024-06-27T18:18:49.169701
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/AS1A05_165T07_9000003062_20727cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20727cztM0_level2_quad_clean.evt
Size (bytes)507,939,840117,673,920
Size484.4 MB 112.2 MB
Events in quadrant A3,256,247820,370
Events in quadrant B3,620,163801,846
Events in quadrant C3,348,182764,165
Events in quadrant D4,745,850752,747

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134811
B0146281
C0138591
D0184341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60831001.643926%
B60841622.662722%
C60841242.038133%
D60842063.385930%

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 7403 6083 0 0 0.00% 0.00%
B 7404 6085 51 51 0.69% 0.84%
C 7404 6084 0 0 0.00% 0.00%
D 7404 6084 86 86 1.16% 1.41%

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 0 226 7716 41.38 844 829 166.4
A 8 205 6606 34.71 844 829 166.4
A 3 137 6186 32.18 844 829 166.4
B 7 220 273987 1802.58 813 797 151.6
B 3 64 62412 406.55 813 797 151.6
B 0 229 31934 205.45 813 797 151.6
C 8 208 126992 702.48 783 790 179.7
C 14 238 125512 694.24 783 790 179.7
C 3 233 21994 118.03 783 790 179.7
D 1 52 709515 3670.5 810 788 193.1
D 1 20 688588 3562.12 810 788 193.1
D 1 239 80455 412.6 810 788 193.1

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