ASTROSAT CZTI

Data Quality Report

Orbit 38027

Creation date: 2024-06-27T21:47:30.257429
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/AS1A11_082T01_9000005356_38027cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38027cztM0_level2_quad_clean.evt
Size (bytes)391,147,200100,013,760
Size373.0 MB 95.4 MB
Events in quadrant A3,378,526687,409
Events in quadrant B3,036,368718,242
Events in quadrant C2,798,984697,441
Events in quadrant D4,866,785567,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131643
B0120282
C0110252
D0177312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5122811.581414%
B5122821.600937%
C5122100.195236%
D512267113.100351%

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 7185 5123 50 50 0.70% 0.98%
B 7185 5123 54 54 0.75% 1.05%
C 7185 5123 4 4 0.06% 0.08%
D 7185 5123 595 595 8.28% 11.61%

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 10 83 370249 2920.6 640 629 126.6
A 15 254 191534 1508.46 640 629 126.6
A 12 16 166726 1312.44 640 629 126.6
B 5 255 192343 1600.12 641 625 119.8
B 5 200 113503 942.1 641 625 119.8
B 0 213 58924 486.58 641 625 119.8
C 15 214 221811 1528.34 642 647 144.7
C 0 10 26416 178.08 642 647 144.7
C 3 233 24456 164.53 642 647 144.7
D 12 227 1529025 10548.11 603 588 144.9
D 12 233 529930 3653.11 603 588 144.9
D 2 250 207981 1431.27 603 588 144.9

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