ASTROSAT CZTI

Data Quality Report

Orbit 21206

Creation date: 2024-06-27T18:24:55.885753
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/AS1A06_002T01_9000003134_21206cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21206cztM0_level2_quad_clean.evt
Size (bytes)737,582,40085,415,040
Size703.4 MB 81.5 MB
Events in quadrant A7,833,982402,881
Events in quadrant B3,886,197612,620
Events in quadrant C3,142,174588,364
Events in quadrant D7,061,362553,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273412
B0154862
C0131362
D0252262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6125187330.579592%
B61252644.310204%
C61241041.698236%
D6124118219.301110%

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 7465 6126 1684 1684 22.56% 27.49%
B 7465 6126 174 174 2.33% 2.84%
C 7464 6125 12 12 0.16% 0.20%
D 7464 6125 1132 1132 15.17% 18.48%

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 15 236 5349393 42078.65 635 624 127.1
A 11 47 27429 210.87 635 624 127.1
A 5 16 9144 67.03 635 624 127.1
B 0 182 719801 4802.8 791 772 149.7
B 15 35 25807 167.22 791 772 149.7
B 0 230 23689 153.08 791 772 149.7
C 14 238 120022 680.05 754 759 175.4
C 0 10 57699 324.68 754 759 175.4
C 0 207 12491 66.9 754 759 175.4
D 7 238 3901721 23505.68 677 657 166.0
D 1 52 126541 758.51 677 657 166.0
D 15 145 120240 720.54 677 657 166.0

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