ASTROSAT CZTI

Data Quality Report

Orbit 11128

Creation date: 2024-06-27T16:08:39.060262
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/AS1G08_071T02_9000001620_11128cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11128cztM0_level2_quad_clean.evt
Size (bytes)548,046,72085,069,440
Size522.7 MB 81.1 MB
Events in quadrant A4,478,746533,838
Events in quadrant B3,801,203555,028
Events in quadrant C2,922,269547,615
Events in quadrant D4,965,958497,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174873
B0154492
C0129402
D0189392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63342383.757499%
B63341672.636565%
C6334220.347332%
D63344827.609725%

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 7499 6335 159 159 2.12% 2.51%
B 7499 6335 80 80 1.07% 1.26%
C 7499 6335 0 0 0.00% 0.00%
D 7499 6335 408 408 5.44% 6.44%

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 8 5 1453422 9535.82 755 739 152.3
A 14 63 49427 319.6 755 739 152.3
A 11 29 32236 206.76 755 739 152.3
B 4 239 496974 3385.56 771 753 146.6
B 10 16 92371 625.08 771 753 146.6
B 0 219 83172 562.32 771 753 146.6
C 13 61 5602 27.8 748 752 174.4
C 0 10 2904 12.34 748 752 174.4
C 8 222 2500 10.02 748 752 174.4
D 1 52 1051486 6051.03 713 693 173.7
D 10 253 595123 3423.05 713 693 173.7
D 11 129 292549 1680.66 713 693 173.7

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