ASTROSAT CZTI

Data Quality Report

Orbit 34798

Creation date: 2022-03-06T07:53:22.844427
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_004T01_9000004990_34798cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34798cztM0_level2_quad_clean.evt
Size (bytes)448,263,36058,049,280
Size427.5 MB 55.4 MB
Events in quadrant A2,675,593349,710
Events in quadrant B3,825,708355,395
Events in quadrant C3,022,246356,440
Events in quadrant D3,696,440328,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109503
B0148322
C0117732
D0147132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5239100.190876%
B52392815.363619%
C5239551.049819%
D5239951.813323%

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 7302 5240 2 2 0.03% 0.04%
B 7302 5240 201 201 2.75% 3.84%
C 7302 5240 44 44 0.60% 0.84%
D 7302 5240 69 69 0.94% 1.32%

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 49183 365.89 662 652 132.6
A 15 174 43037 319.55 662 652 132.6
A 13 6 12910 92.42 662 652 132.6
B 5 172 709938 5750.97 658 642 123.3
B 0 190 159063 1284.48 658 642 123.3
B 5 255 131626 1062.02 658 642 123.3
C 15 214 225573 1482.74 657 664 151.7
C 0 10 194284 1276.47 657 664 151.7
C 14 67 40889 265.19 657 664 151.7
D 8 195 665952 4292.54 643 627 155.0
D 12 233 108020 692.88 643 627 155.0
D 13 249 100860 646.68 643 627 155.0

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