ASTROSAT CZTI

Data Quality Report

Orbit 24291

Creation date: 2024-06-27T19:04:24.941628
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/AS1A07_047T08_9000003590_24291cztM0_level2.evt modeM0/AS1A07_047T08_9000003590_24291cztM0_level2_quad_clean.evt
Size (bytes)568,048,320131,935,680
Size541.7 MB 125.8 MB
Events in quadrant A3,135,331910,046
Events in quadrant B3,170,661926,245
Events in quadrant C4,812,457871,799
Events in quadrant D5,644,677834,312

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132710
B0133750
C0188460
D0212331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6503741.137936%
B6504831.276138%
C65042293.520910%
D65034657.150546%

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 7403 6503 0 0 0.00% 0.00%
B 7404 6504 2 2 0.03% 0.03%
C 7403 6503 20 20 0.27% 0.31%
D 7403 6503 334 334 4.51% 5.14%

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 13 254 9807 55.63 812 797 162.0
A 0 226 6975 38.14 812 797 162.0
A 3 137 6731 36.64 812 797 162.0
B 12 111 17590 112.3 805 787 149.6
B 11 111 15691 99.6 805 787 149.6
B 14 111 14112 89.05 805 787 149.6
C 7 247 1405159 7892.36 778 784 177.9
C 2 16 242609 1359.02 778 784 177.9
C 14 238 126128 704.41 778 784 177.9
D 1 52 1336465 7203.17 774 750 185.4
D 8 195 1178188 6349.62 774 750 185.4
D 12 233 200562 1077.53 774 750 185.4

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