ASTROSAT CZTI

Data Quality Report

Orbit 11494

Creation date: 2024-06-27T16:13:46.185688
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_107T01_9000001684_11494cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11494cztM0_level2_quad_clean.evt
Size (bytes)626,503,68090,875,520
Size597.5 MB 86.7 MB
Events in quadrant A6,112,603555,468
Events in quadrant B5,123,999577,192
Events in quadrant C3,016,222595,994
Events in quadrant D4,281,608570,093

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225873
B0195562
C0133762
D0169412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649983212.801970%
B64994977.647330%
C6499360.553931%
D64991161.784890%

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 7625 6500 548 548 7.19% 8.43%
B 7625 6501 284 284 3.72% 4.37%
C 7625 6501 0 0 0.00% 0.00%
D 7625 6501 54 54 0.71% 0.83%

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 2997966 19884.91 755 742 150.7
A 1 162 50489 330.04 755 742 150.7
A 1 178 27825 179.68 755 742 150.7
B 4 81 1078960 7344.45 772 755 146.8
B 4 239 793093 5397.2 772 755 146.8
B 11 51 114789 776.77 772 755 146.8
C 13 61 5618 27.12 773 778 178.5
C 14 67 2532 9.83 773 778 178.5
C 12 4 2181 7.86 773 778 178.5
D 1 52 451067 2459.72 772 753 183.1
D 12 110 181584 987.74 772 753 183.1
D 13 152 148801 808.67 772 753 183.1

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