ASTROSAT CZTI

Data Quality Report

Orbit 51191

Creation date: 2025-03-17T14:26:04.805428
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/AS1C07_001T01_9000006454_51191cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51191cztM0_level2_quad_clean.evt
Size (bytes)725,578,56089,484,480
Size692.0 MB 85.3 MB
Events in quadrant A4,300,377627,377
Events in quadrant B4,653,089701,569
Events in quadrant C12,603,685345,700
Events in quadrant D4,775,724561,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176432
B0185292
C0420982
D0190652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67842593.817807%
B67841492.196344%
C6784347951.282429%
D67843695.439269%

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 7879 6785 162 162 2.06% 2.39%
B 7879 6785 57 57 0.72% 0.84%
C 7879 6785 3120 3120 39.60% 45.98%
D 7879 6785 329 329 4.18% 4.85%

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 13 248 439794 2563.34 692 674 171.3
A 3 62 410746 2393.77 692 674 171.3
A 4 207 202349 1177.27 692 674 171.3
B 10 254 1074921 7263.2 700 678 147.9
B 8 128 162398 1093.43 700 678 147.9
B 5 185 110583 743.09 700 678 147.9
C 4 12 5408930 36880.82 527 523 146.6
C 12 247 2882196 19650.6 527 523 146.6
C 15 229 1091205 7437.54 527 523 146.6
D 2 216 301957 1625.83 657 634 185.3
D 2 62 285547 1537.29 657 634 185.3
D 15 174 272816 1468.6 657 634 185.3

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