ASTROSAT CZTI

Data Quality Report

Orbit 35078

Creation date: 2024-06-27T21:09:04.091201
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/AS1T05_015T01_9000005026_35078cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35078cztM0_level2_quad_clean.evt
Size (bytes)500,454,72077,474,880
Size477.3 MB 73.9 MB
Events in quadrant A2,621,996492,283
Events in quadrant B4,557,381491,659
Events in quadrant C2,806,967502,728
Events in quadrant D4,787,579464,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115833
B0173712
C0117192
D0182212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5641150.265910%
B564166411.770963%
C5641180.319092%
D56412113.740472%

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 7043 5642 2 2 0.03% 0.04%
B 7043 5642 470 470 6.67% 8.33%
C 7043 5642 8 8 0.11% 0.14%
D 7043 5642 174 174 2.47% 3.08%

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 10 83 79143 602.46 646 634 130.3
A 9 143 19285 143.12 646 634 130.3
A 13 6 18244 135.14 646 634 130.3
B 5 172 1920962 16280.81 612 596 118.0
B 0 189 136250 1150.07 612 596 118.0
B 4 232 48623 407.17 612 596 118.0
C 15 214 236366 1601.72 635 638 147.2
C 0 10 68916 463.93 635 638 147.2
C 14 67 12446 80.23 635 638 147.2
D 8 195 1526338 10032.19 621 605 152.1
D 13 249 361296 2371.66 621 605 152.1
D 2 250 212098 1390.64 621 605 152.1

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