ASTROSAT CZTI

Data Quality Report

Orbit 20230503_A12_095T02_9000005596_level2

Creation date: 2023-05-06T14:55:39.459564
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/AS1A12_095T02_9000005596cztM0_level2.fits modeM0/AS1A12_095T02_9000005596cztM0_level2_quad_clean.evt
Size (bytes)990,118,0801,065,781,440
Size944.3 MB 1016.4 MB
Events in quadrant A5,987,2866,587,074
Events in quadrant B5,617,0226,299,241
Events in quadrant C5,827,3166,248,665
Events in quadrant D4,964,4445,557,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02514220
B02771080
C02354290
D02850250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022680
B022680
C022680
D022680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04010
B04010
C04010
D04010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1106762970.268351%
B11067640103.623188%
C1106768390.758069%
D11067655154.983013%

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 151060 110676 0 0 0.00% 0.00%
B 151060 110657 0 0 0.00% 0.00%
C 151060 110666 0 0 0.00% 0.00%
D 151060 110482 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 0 29 4981 8.98 1562 1457 392.5
A 7 110 4866 8.69 1562 1457 392.5
A 9 19 4762 8.42 1562 1457 392.5
B 2 9 4858 11.76 1487 1416 292.7
B 3 80 4125 9.25 1487 1416 292.7
B 2 8 4001 8.83 1487 1416 292.7
C 1 81 4781 8.57 1538 1436 390.3
C 3 202 4643 8.22 1538 1436 390.3
C 1 80 4623 8.17 1538 1436 390.3
D 7 3 3700 6.34 1423 1289 380.3
D 10 189 3656 6.22 1423 1289 380.3
D 10 113 3600 6.08 1423 1289 380.3

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