ASTROSAT CZTI

Data Quality Report

Orbit 26933

Creation date: 2024-06-27T19:34:40.135732
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_134T01_9000003896_26933cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26933cztM0_level2_quad_clean.evt
Size (bytes)567,040,32094,253,760
Size540.8 MB 89.9 MB
Events in quadrant A4,843,996593,210
Events in quadrant B3,960,595620,832
Events in quadrant C3,151,266608,603
Events in quadrant D4,773,928575,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187470
B0160510
C0134710
D0186700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65434697.167966%
B65441822.781174%
C6544360.550122%
D65431722.628764%

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 7599 6545 312 312 4.11% 4.77%
B 7599 6545 131 131 1.72% 2.00%
C 7599 6545 1 1 0.01% 0.02%
D 7599 6544 166 166 2.18% 2.54%

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 14 235 1683744 10634.16 783 769 158.3
A 0 13 63052 393.55 783 769 158.3
A 8 192 43132 267.68 783 769 158.3
B 10 245 375352 2481.72 797 778 150.9
B 0 189 342005 2260.78 797 778 150.9
B 0 229 29220 188.44 797 778 150.9
C 14 238 121933 661.31 770 774 183.2
C 15 208 19330 101.28 770 774 183.2
C 13 61 5334 24.89 770 774 183.2
D 7 80 1011113 5244.01 759 740 192.7
D 2 250 323832 1676.9 759 740 192.7
D 1 52 263027 1361.31 759 740 192.7

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