ASTROSAT CZTI

Data Quality Report

Orbit 39246

Creation date: 2024-06-27T22:02:14.671028
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_095T01_9000005450_39246cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39246cztM0_level2_quad_clean.evt
Size (bytes)446,492,16080,138,880
Size425.8 MB 76.4 MB
Events in quadrant A2,858,881584,980
Events in quadrant B2,740,313587,245
Events in quadrant C2,334,049553,458
Events in quadrant D8,213,967357,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114243
B0112462
C098592
D0278192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4889711.452240%
B4889951.943138%
C488960.122724%
D4889197840.458171%

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 6952 4890 47 47 0.68% 0.96%
B 6952 4890 73 73 1.05% 1.49%
C 6952 4890 1 1 0.01% 0.02%
D 6952 4890 1601 1601 23.03% 32.74%

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 407472 3624.39 558 547 112.3
A 13 248 272533 2422.52 558 547 112.3
A 15 174 16272 140.06 558 547 112.3
B 5 172 432654 4136.3 548 534 104.5
B 0 190 74349 706.56 548 534 104.5
B 5 255 49261 466.42 548 534 104.5
C 15 214 209934 1664.62 539 540 125.8
C 0 10 11828 89.73 539 540 125.8
C 15 159 10342 77.92 539 540 125.8
D 12 235 5951702 52900.83 458 446 112.5
D 5 222 162605 1441.43 458 446 112.5
D 12 233 81920 724.22 458 446 112.5

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