ASTROSAT CZTI

Data Quality Report

Orbit 32670

Creation date: 2024-06-27T20:40:37.807974
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/AS1A10_057T03_9000004722_32670cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32670cztM0_level2_quad_clean.evt
Size (bytes)534,893,76066,784,320
Size510.1 MB 63.7 MB
Events in quadrant A3,423,859424,752
Events in quadrant B3,288,012433,002
Events in quadrant C2,883,250423,188
Events in quadrant D6,268,700393,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131662
B0131621
C0116091
D0221471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49552384.803229%
B4955470.948537%
C4955941.897074%
D495594819.132190%

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 7048 4956 195 195 2.77% 3.93%
B 7048 4956 33 33 0.47% 0.67%
C 7048 4956 80 80 1.14% 1.61%
D 7048 4956 911 911 12.93% 18.38%

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 15 249 968123 8008.99 612 602 120.8
A 0 253 23846 192.41 612 602 120.8
A 14 239 12606 99.37 612 602 120.8
B 0 219 276366 2345.93 625 614 117.5
B 3 26 229788 1949.67 625 614 117.5
B 12 1 145757 1234.79 625 614 117.5
C 8 35 238271 1764.85 592 597 134.7
C 0 10 139510 1031.5 592 597 134.7
C 0 207 48428 355.17 592 597 134.7
D 8 195 892510 6874.55 556 546 129.7
D 12 33 750164 5777.46 556 546 129.7
D 7 38 738821 5690.04 556 546 129.7

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