ASTROSAT CZTI

Data Quality Report

Orbit 20240108_A13_004T13_9000006022_level2

Creation date: 2024-01-11T12:54:44.556883
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_004T13_9000006022cztM0_level2.fits modeM0/AS1A13_004T13_9000006022cztM0_level2_quad_clean.evt
Size (bytes)1,194,266,8801,195,894,080
Size1.1 GB 1.1 GB
Events in quadrant A6,419,0125,897,886
Events in quadrant B6,978,4327,486,964
Events in quadrant C7,339,3107,371,952
Events in quadrant D5,771,7405,825,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06214140
B03411090
C02954150
D05056340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028500
B028500
C028500
D028500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1405913227422.955950%
B14059360164.279018%
C14059313850.985113%
D1405932058314.640131%

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 157539 139553 0 0 0.00% 0.00%
B 157538 140541 0 0 0.00% 0.00%
C 157539 140576 0 0 0.00% 0.00%
D 157538 139999 0 0 0.00% 0.00%

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 7 110 5273 8.74 1670 1557 425.3
A 15 236 4956 7.99 1670 1557 425.3
A 0 29 4949 7.97 1670 1557 425.3
B 2 9 6462 13.01 1847 1756 361.8
B 2 8 5313 9.83 1847 1756 361.8
B 3 17 5081 9.19 1847 1756 361.8
C 3 202 5670 7.83 1939 1805 493.6
C 1 81 5615 7.72 1939 1805 493.6
C 1 80 5529 7.54 1939 1805 493.6
D 15 47 4277 6.02 1660 1506 460.1
D 15 63 4242 5.95 1660 1506 460.1
D 10 189 4232 5.92 1660 1506 460.1

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