ASTROSAT CZTI

Data Quality Report

Orbit 13325

Creation date: 2024-06-27T16:39:09.696708
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_101T01_9000001984_13325cztM0_level2.evt modeM0/AS1A04_101T01_9000001984_13325cztM0_level2_quad_clean.evt
Size (bytes)2,189,977,920332,043,840
Size2.0 GB 316.7 MB
Events in quadrant A14,306,0882,032,235
Events in quadrant B14,769,9212,087,873
Events in quadrant C13,692,5572,045,518
Events in quadrant D21,598,5461,896,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05900
B05900
C05900
D05900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0609406
B0619835
C0598795
D0834225

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290043451.189491%
B290045221.799752%
C290042880.992966%
D2900416395.650945%

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 31450 29010 5 5 0.02% 0.02%
B 31450 29010 111 111 0.35% 0.38%
C 31450 29010 38 38 0.12% 0.13%
D 31450 29010 1131 1131 3.60% 3.90%

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 614067 862.06 3499 3421 708.4
A 1 162 114600 156.95 3499 3421 708.4
A 1 178 41325 53.51 3499 3421 708.4
B 3 64 303430 447.49 3506 3423 670.4
B 4 142 207411 304.27 3506 3423 670.4
B 10 245 152688 222.64 3506 3423 670.4
C 15 208 270789 338.42 3414 3429 790.0
C 3 233 58479 69.68 3414 3429 790.0
C 6 96 47625 55.94 3414 3429 790.0
D 1 52 7274762 9099.38 3336 3239 799.1
D 8 195 1073229 1338.96 3336 3239 799.1
D 2 136 200242 246.52 3336 3239 799.1

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