ASTROSAT CZTI

Data Quality Report

Orbit 12649

Creation date: 2024-06-27T16:30:30.752273
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_174T01_9000001876_12649cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12649cztM0_level2_quad_clean.evt
Size (bytes)516,061,44096,215,040
Size492.2 MB 91.8 MB
Events in quadrant A3,038,337663,975
Events in quadrant B5,198,467591,071
Events in quadrant C2,884,595652,985
Events in quadrant D4,110,312596,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128252
B0192931
C0122431
D0160471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5852601.025290%
B585281713.961039%
C5852440.751880%
D58524056.920711%

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 7123 5853 0 0 0.00% 0.00%
B 7123 5853 690 690 9.69% 11.79%
C 7123 5853 11 11 0.15% 0.19%
D 7122 5852 308 308 4.32% 5.26%

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 15 77114 500.51 754 742 152.6
A 0 23 48937 315.85 754 742 152.6
A 0 226 9858 59.74 754 742 152.6
B 4 239 2171755 16594.15 698 684 130.8
B 3 64 87901 666.63 698 684 130.8
B 11 51 85655 649.46 698 684 130.8
C 15 208 49562 292.06 727 733 167.2
C 13 61 5315 27.41 727 733 167.2
C 8 222 1906 7.02 727 733 167.2
D 1 52 1178924 6963.25 707 690 169.2
D 10 157 156063 918.24 707 690 169.2
D 13 249 30232 174.59 707 690 169.2

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