ASTROSAT CZTI

Data Quality Report

Orbit 44142

Creation date: 2024-06-27T22:59:42.203135
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_44142cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44142cztM0_level2_quad_clean.evt
Size (bytes)437,664,960111,574,080
Size417.4 MB 106.4 MB
Events in quadrant A5,061,511734,486
Events in quadrant B3,627,319764,241
Events in quadrant C3,063,918752,691
Events in quadrant D3,944,186674,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197033
B0152323
C0136323
D0161083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64833345.151936%
B64832353.624865%
C6483450.694123%
D64831562.406293%

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 7633 6485 130 130 1.70% 2.00%
B 7633 6485 108 108 1.41% 1.67%
C 7633 6485 3 3 0.04% 0.05%
D 7633 6485 107 107 1.40% 1.65%

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 1419645 8982.23 760 745 158.0
A 14 238 671101 4243.63 760 745 158.0
A 13 6 12434 74.0 760 745 158.0
B 5 172 374803 2500.87 761 739 149.6
B 5 235 162636 1082.39 761 739 149.6
B 0 189 48101 316.64 761 739 149.6
C 14 254 66928 365.89 761 765 180.8
C 12 16 10504 53.86 761 765 180.8
C 3 233 7681 38.25 761 765 180.8
D 13 249 361730 1891.23 753 731 190.9
D 1 47 259839 1357.44 753 731 190.9
D 1 52 254257 1328.19 753 731 190.9

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