ASTROSAT CZTI

Data Quality Report

Orbit 11347

Creation date: 2024-06-27T16:11:37.948391
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/AS1G08_062T01_9000001660_11347cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11347cztM0_level2_quad_clean.evt
Size (bytes)551,730,24083,589,120
Size526.2 MB 79.7 MB
Events in quadrant A4,269,479546,270
Events in quadrant B4,395,427525,682
Events in quadrant C2,825,848555,608
Events in quadrant D4,818,867491,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167382
B0169751
C0120941
D0181871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58911282.172806%
B58914417.485996%
C5891210.356476%
D58915329.030725%

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 7222 5892 54 54 0.75% 0.92%
B 7222 5892 307 307 4.25% 5.21%
C 7222 5892 0 0 0.00% 0.00%
D 7222 5892 475 475 6.58% 8.06%

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 13 251 1407239 9672.84 724 710 145.4
A 8 5 31658 212.83 724 710 145.4
A 1 162 17505 115.5 724 710 145.4
B 4 239 787547 5983.43 707 692 131.5
B 3 64 656688 4988.35 707 692 131.5
B 3 189 104514 789.49 707 692 131.5
C 4 175 20211 118.05 717 722 165.1
C 13 61 5362 28.11 717 722 165.1
C 13 250 5119 26.63 717 722 165.1
D 13 152 925381 5584.11 684 665 165.6
D 1 52 619799 3738.78 684 665 165.6
D 10 253 295023 1777.55 684 665 165.6

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