ASTROSAT CZTI

Data Quality Report

Orbit 00927

Creation date: 2024-06-27T14:04:52.359554
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/AS1P01_163T03_9000000186_00927cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00927cztM0_level2_quad_clean.evt
Size (bytes)906,206,40091,892,160
Size864.2 MB 87.6 MB
Events in quadrant A6,702,937605,677
Events in quadrant B7,126,930609,589
Events in quadrant C6,684,861592,000
Events in quadrant D6,549,341575,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239640
B0252070
C0238940
D0235470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5722150.262146%
B5722470.821391%
C5721120.209754%
D57221091.904928%

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 6977 5723 204 204 2.92% 3.56%
B 6977 5723 274 274 3.93% 4.79%
C 6976 5722 180 180 2.58% 3.15%
D 6977 5723 321 321 4.60% 5.61%

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 15 233 11280 22.83 1739 1754 417.2
A 14 170 11088 22.37 1739 1754 417.2
A 11 79 6652 11.74 1739 1754 417.2
B 8 38 89658 207.08 1819 1827 424.1
B 0 230 22268 48.19 1819 1827 424.1
B 5 191 20309 43.57 1819 1827 424.1
C 15 241 229313 508.7 1622 1675 447.5
C 9 144 78340 171.32 1622 1675 447.5
C 3 111 22104 45.65 1622 1675 447.5
D 12 188 463841 962.15 1554 1605 480.4
D 1 4 119263 244.91 1554 1605 480.4
D 13 73 69452 141.22 1554 1605 480.4

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