ASTROSAT CZTI

Data Quality Report

Orbit 50376

Creation date: 2025-01-20T13:20:17.537018
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/AS1C09_003T01_9000006442_50376cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50376cztM0_level2_quad_clean.evt
Size (bytes)693,636,48087,960,960
Size661.5 MB 83.9 MB
Events in quadrant A3,860,348636,487
Events in quadrant B3,703,369688,737
Events in quadrant C12,051,738324,974
Events in quadrant D5,554,978557,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157352
B0154732
C0403099
D0211322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65221682.575897%
B65222113.235204%
C6521356154.608189%
D65214146.348720%

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 7642 6523 63 63 0.82% 0.97%
B 7642 6523 68 68 0.89% 1.04%
C 7641 6521 2968 2968 38.84% 45.51%
D 7641 6522 300 300 3.93% 4.60%

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 12 250 155168 868.86 722 704 177.8
A 4 3 153153 857.52 722 704 177.8
A 7 221 99175 553.9 722 704 177.8
B 5 185 174132 1150.44 714 689 150.8
B 5 172 112491 741.58 714 689 150.8
B 1 238 105246 693.52 714 689 150.8
C 15 235 2488503 16535.33 538 533 150.5
C 0 208 1788573 11883.52 538 533 150.5
C 15 148 1213971 8064.65 538 533 150.5
D 3 12 772642 4099.88 679 655 188.3
D 15 165 377716 2002.5 679 655 188.3
D 7 61 253241 1341.44 679 655 188.3

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