ASTROSAT CZTI

Data Quality Report

Orbit 42186

Creation date: 2024-06-27T22:38:15.158542
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/AS1A12_088T24_9000005768_42186cztM0_level2.fits modeM0/AS1A12_088T24_9000005768_42186cztM0_level2_quad_clean.evt
Size (bytes)365,538,24079,404,480
Size348.6 MB 75.7 MB
Events in quadrant A5,821,425461,834
Events in quadrant B2,269,155575,957
Events in quadrant C2,251,477540,265
Events in quadrant D2,809,672484,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204832
B0100814
C098302
D0118602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486896119.741167%
B4867150.308198%
C486740.082186%
D48671493.061434%

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 6991 4869 995 995 14.23% 20.44%
B 6990 4868 9 9 0.13% 0.18%
C 6990 4868 0 0 0.00% 0.00%
D 6990 4868 139 139 1.99% 2.86%

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 15 223 3387706 32776.14 498 487 103.3
A 10 83 488981 4726.87 498 487 103.3
A 15 252 14896 139.43 498 487 103.3
B 5 255 107682 1041.93 535 522 102.8
B 0 229 47145 453.32 535 522 102.8
B 12 111 12880 120.16 535 522 102.8
C 15 214 206059 1671.35 521 524 123.0
C 7 247 4550 32.74 521 524 123.0
C 0 207 4153 29.51 521 524 123.0
D 13 249 246664 1960.51 508 493 125.6
D 12 6 150480 1194.5 508 493 125.6
D 1 52 126382 1002.58 508 493 125.6

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