ASTROSAT CZTI

Data Quality Report

Orbit 44125

Creation date: 2024-06-27T22:59:28.638794
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/AS1A13_012T02_9000005950_44125cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44125cztM0_level2_quad_clean.evt
Size (bytes)690,189,12095,857,920
Size658.2 MB 91.4 MB
Events in quadrant A13,252,376232,854
Events in quadrant B3,299,318805,232
Events in quadrant C3,283,106768,969
Events in quadrant D5,215,899648,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437371
B0140371
C0139691
D0198131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6403470373.449945%
B6404931.452217%
C64041131.764522%
D64046369.931293%

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 7603 6403 3650 3650 48.01% 57.00%
B 7604 6405 6 6 0.08% 0.09%
C 7604 6405 30 30 0.39% 0.47%
D 7604 6405 445 445 5.85% 6.95%

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 15 223 6636902 64956.74 492 482 102.2
A 14 238 3172627 31048.69 492 482 102.2
A 10 83 882457 8632.7 492 482 102.2
B 5 172 68165 438.53 789 768 153.7
B 4 173 43734 279.56 789 768 153.7
B 0 183 22761 143.1 789 768 153.7
C 14 254 220338 1203.79 778 783 182.4
C 3 233 15099 78.49 778 783 182.4
C 14 220 7670 37.76 778 783 182.4
D 12 233 758721 4068.01 743 722 186.3
D 1 47 453646 2430.74 743 722 186.3
D 1 52 327461 1753.53 743 722 186.3

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