ASTROSAT CZTI

Data Quality Report

Orbit 51206

Creation date: 2025-03-17T14:10:35.343523
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_51206cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51206cztM0_level2_quad_clean.evt
Size (bytes)651,312,00094,029,120
Size621.1 MB 89.7 MB
Events in quadrant A4,441,945614,312
Events in quadrant B4,717,176693,279
Events in quadrant C6,533,018579,420
Events in quadrant D7,888,276484,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182602
B0187222
C0242202
D0282322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68304376.398243%
B68302723.982430%
C683083912.284041%
D6830130519.106881%

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 7830 6832 189 189 2.41% 2.77%
B 7830 6832 143 143 1.83% 2.09%
C 7830 6832 734 734 9.37% 10.74%
D 7830 6831 1221 1221 15.59% 17.87%

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 12 250 358763 2081.97 695 677 172.0
A 7 206 260383 1509.97 695 677 172.0
A 13 248 219306 1271.14 695 677 172.0
B 8 128 430316 2878.91 706 683 149.2
B 10 254 380377 2544.28 706 683 149.2
B 5 185 241523 1613.84 706 683 149.2
C 4 12 1241981 6775.06 667 663 183.2
C 15 224 1040248 5674.01 667 663 183.2
C 12 250 488923 2664.9 667 663 183.2
D 6 42 2615655 14812.87 625 603 176.5
D 2 62 1126857 6379.63 625 603 176.5
D 3 12 500187 2829.88 625 603 176.5

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