ASTROSAT CZTI

Data Quality Report

Orbit 11175

Creation date: 2024-06-27T16:09:22.771973
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/AS1A04_049T01_9000001632_11175cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11175cztM0_level2_quad_clean.evt
Size (bytes)593,902,08087,825,600
Size566.4 MB 83.8 MB
Events in quadrant A5,304,379534,870
Events in quadrant B5,153,342555,972
Events in quadrant C2,894,043588,093
Events in quadrant D4,203,933536,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200503
B0195932
C0130294
D0170282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63596349.970121%
B635964910.206007%
C6358360.566216%
D63591983.113697%

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 7569 6359 427 427 5.64% 6.71%
B 7569 6360 329 329 4.35% 5.17%
C 7569 6360 0 0 0.00% 0.00%
D 7569 6360 105 105 1.39% 1.65%

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 1359140 9509.21 709 694 142.9
A 14 238 741618 5186.52 709 694 142.9
A 8 15 312458 2182.37 709 694 142.9
B 4 239 1829731 13340.2 732 714 137.1
B 4 80 99484 720.39 732 714 137.1
B 11 51 98687 714.58 732 714 137.1
C 14 234 6582 34.25 738 742 170.5
C 5 37 5757 29.41 738 742 170.5
C 13 61 5448 27.6 738 742 170.5
D 10 157 613380 3397.12 707 689 180.4
D 13 152 307294 1700.0 707 689 180.4
D 10 253 125790 693.63 707 689 180.4

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