ASTROSAT CZTI

Data Quality Report

Orbit 21582

Creation date: 2024-06-27T18:29:50.412791
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/AS1A06_002T02_9000003204_21582cztM0_level2.evt modeM0/AS1A06_002T02_9000003204_21582cztM0_level2_quad_clean.evt
Size (bytes)504,832,32096,145,920
Size481.4 MB 91.7 MB
Events in quadrant A4,922,211565,646
Events in quadrant B3,231,138667,701
Events in quadrant C3,120,004634,372
Events in quadrant D3,591,493607,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184550
B0133160
C0130160
D0147820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A623982413.207245%
B6240310.496795%
C6240570.913462%
D62401432.291667%

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 7634 6240 669 669 8.76% 10.72%
B 7635 6241 1 1 0.01% 0.02%
C 7635 6241 0 0 0.00% 0.00%
D 7635 6241 89 89 1.17% 1.43%

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 15 236 2075714 14226.95 739 726 145.8
A 13 254 7374 45.58 739 726 145.8
A 0 226 6532 39.81 739 726 145.8
B 0 230 21484 139.84 801 784 148.0
B 0 190 21244 138.21 801 784 148.0
B 6 36 19428 125.95 801 784 148.0
C 14 238 123347 690.5 767 773 177.5
C 13 61 5444 26.31 767 773 177.5
C 7 221 3221 13.79 767 773 177.5
D 1 52 591475 3229.4 763 742 182.9
D 2 136 59945 323.65 763 742 182.9
D 14 35 26616 141.45 763 742 182.9

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