ASTROSAT CZTI

Data Quality Report

Orbit 20240105_A13_004T11_9000006018_level2

Creation date: 2024-01-08T13:27:35.983005
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_004T11_9000006018cztM0_level2.fits modeM0/AS1A13_004T11_9000006018cztM0_level2_quad_clean.evt
Size (bytes)1,100,502,7201,091,563,200
Size1.0 GB 1.0 GB
Events in quadrant A6,449,2906,435,961
Events in quadrant B6,351,3886,581,287
Events in quadrant C6,639,9526,378,382
Events in quadrant D5,159,8724,948,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025860
B025860
C025860
D025860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04433890
B02999790
C02755350
D04594400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12714287276.863979%
B12714445923.611653%
C12714420991.650884%
D1271442001715.743566%

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 145739 127038 0 0 0.00% 0.00%
B 145739 127118 0 0 0.00% 0.00%
C 145739 127110 0 0 0.00% 0.00%
D 145740 126256 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 5264 8.63 1680 1566 428.6
A 0 29 5184 8.44 1680 1566 428.6
A 15 236 5070 8.18 1680 1566 428.6
B 2 9 5908 13.12 1682 1600 328.3
B 2 8 4762 9.63 1682 1600 328.3
B 3 17 4609 9.17 1682 1600 328.3
C 3 202 5186 7.86 1756 1634 452.0
C 1 81 5178 7.84 1756 1634 452.0
C 3 203 5046 7.55 1756 1634 452.0
D 8 176 5104 9.16 1481 1342 410.8
D 15 47 3809 6.01 1481 1342 410.8
D 15 63 3783 5.94 1481 1342 410.8

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