ASTROSAT CZTI

Data Quality Report

Orbit 50815

Creation date: 2025-02-19T02:37:16.994616
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_9000006450_50815cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50815cztM0_level2_quad_clean.evt
Size (bytes)532,586,88096,099,840
Size507.9 MB 91.6 MB
Events in quadrant A5,896,533578,252
Events in quadrant B4,346,424680,792
Events in quadrant C3,914,849616,340
Events in quadrant D5,028,471560,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221832
B0176272
C0164882
D0197592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A680689613.164855%
B68062994.393182%
C68061151.689686%
D68064206.171026%

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 7606 6807 844 844 11.10% 12.40%
B 7606 6807 178 178 2.34% 2.61%
C 7606 6807 70 70 0.92% 1.03%
D 7606 6807 325 325 4.27% 4.77%

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 14 254 1606656 9458.76 680 662 169.8
A 12 80 480774 2827.7 680 662 169.8
A 4 191 401054 2358.17 680 662 169.8
B 4 206 1002203 6657.96 707 684 150.4
B 5 79 173936 1151.76 707 684 150.4
B 10 247 70304 462.82 707 684 150.4
C 4 5 152353 771.71 706 696 196.5
C 5 10 141230 715.11 706 696 196.5
C 15 231 136978 693.48 706 696 196.5
D 1 47 557187 2888.26 687 662 192.7
D 8 48 374261 1938.91 687 662 192.7
D 2 249 306458 1587.02 687 662 192.7

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